diff --git a/integration/graphql/package-lock.json b/integration/graphql/package-lock.json
index 8004ebeac92..688db7a12fb 100644
--- a/integration/graphql/package-lock.json
+++ b/integration/graphql/package-lock.json
@@ -370,6 +370,12 @@
             "merge2": "^1.2.3",
             "slash": "^3.0.0"
           }
+        },
+        "typescript": {
+          "version": "3.7.5",
+          "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.5.tgz",
+          "integrity": "sha512-/P5lkRXkWHNAbcJIiHPfRoKqyd7bsyCma1hZNUGfn20qm64T6ZBlrzprymeu918H+mB/0rIg2gGK/BXkhhYgBw==",
+          "optional": true
         }
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@@ -2550,9 +2556,9 @@
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-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
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diff --git a/integration/graphql/package.json b/integration/graphql/package.json
index c9377d4a8b2..d72899dbf98 100644
--- a/integration/graphql/package.json
+++ b/integration/graphql/package.json
@@ -18,7 +18,7 @@
     "reflect-metadata": "0.1.13",
     "rxjs": "6.5.4",
     "subscriptions-transport-ws": "0.9.16",
-    "typescript": "3.7.2",
+    "typescript": "3.8.3",
     "ws": "7.2.1"
   },
   "devDependencies": {
diff --git a/integration/hello-world/package-lock.json b/integration/hello-world/package-lock.json
index d8a8c68ce97..c95faa0b138 100644
--- a/integration/hello-world/package-lock.json
+++ b/integration/hello-world/package-lock.json
@@ -870,9 +870,9 @@
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-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
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diff --git a/integration/hello-world/package.json b/integration/hello-world/package.json
index ece032431e7..1664692ebf3 100644
--- a/integration/hello-world/package.json
+++ b/integration/hello-world/package.json
@@ -17,7 +17,7 @@
     "fastify": "2.10.0",
     "reflect-metadata": "0.1.13",
     "rxjs": "6.5.4",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
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   "devDependencies": {
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diff --git a/integration/hooks/package-lock.json b/integration/hooks/package-lock.json
index 2533c7d4b75..989762e7f0a 100644
--- a/integration/hooks/package-lock.json
+++ b/integration/hooks/package-lock.json
@@ -578,9 +578,9 @@
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-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
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diff --git a/integration/hooks/package.json b/integration/hooks/package.json
index befa6c98fdf..b08f81b77b6 100644
--- a/integration/hooks/package.json
+++ b/integration/hooks/package.json
@@ -13,7 +13,7 @@
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     "reflect-metadata": "0.1.13",
     "rxjs": "6.5.4",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
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diff --git a/integration/injector/package-lock.json b/integration/injector/package-lock.json
index d464b05380d..e4ab0ec8c76 100644
--- a/integration/injector/package-lock.json
+++ b/integration/injector/package-lock.json
@@ -616,9 +616,9 @@
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-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
     },
     "util-deprecate": {
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diff --git a/integration/injector/package.json b/integration/injector/package.json
index 0e3cbe77e0f..16c617b5b5f 100644
--- a/integration/injector/package.json
+++ b/integration/injector/package.json
@@ -16,7 +16,7 @@
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     "reflect-metadata": "0.1.13",
     "rxjs": "6.5.4",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
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   "devDependencies": {
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diff --git a/integration/microservices/package-lock.json b/integration/microservices/package-lock.json
index eaf1a921114..549e4b089a8 100644
--- a/integration/microservices/package-lock.json
+++ b/integration/microservices/package-lock.json
@@ -1170,9 +1170,9 @@
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-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
     },
     "unpipe": {
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diff --git a/integration/microservices/package.json b/integration/microservices/package.json
index bfa782e29f1..292c4056f66 100644
--- a/integration/microservices/package.json
+++ b/integration/microservices/package.json
@@ -18,7 +18,7 @@
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     "reflect-metadata": "0.1.13",
     "rxjs": "6.5.4",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "devDependencies": {
     "@types/node": "7.10.9",
diff --git a/integration/mongoose/package-lock.json b/integration/mongoose/package-lock.json
index acc7680b754..5daf4c977c0 100644
--- a/integration/mongoose/package-lock.json
+++ b/integration/mongoose/package-lock.json
@@ -816,9 +816,9 @@
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     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
     },
     "util-deprecate": {
       "version": "1.0.2",
diff --git a/integration/mongoose/package.json b/integration/mongoose/package.json
index 5545656d55d..7d2428f98a4 100644
--- a/integration/mongoose/package.json
+++ b/integration/mongoose/package.json
@@ -15,7 +15,7 @@
     "mongoose": "5.9.2",
     "reflect-metadata": "0.1.13",
     "rxjs": "6.5.4",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "devDependencies": {
     "@types/mongoose": "5.7.3",
diff --git a/integration/nest-application/get-url/package-lock.json b/integration/nest-application/get-url/package-lock.json
index a5e93696bf0..a44892a9cf3 100644
--- a/integration/nest-application/get-url/package-lock.json
+++ b/integration/nest-application/get-url/package-lock.json
@@ -1563,9 +1563,9 @@
       "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c="
     },
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-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
     },
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diff --git a/integration/nest-application/get-url/package.json b/integration/nest-application/get-url/package.json
index a31700d4025..471ebd023c1 100644
--- a/integration/nest-application/get-url/package.json
+++ b/integration/nest-application/get-url/package.json
@@ -17,7 +17,7 @@
     "fastify": "2.9.0",
     "reflect-metadata": "0.1.13",
     "rxjs": "6.5.4",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
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   "devDependencies": {
     "@types/node": "13.7.7",
diff --git a/integration/scopes/package-lock.json b/integration/scopes/package-lock.json
index d8a8c68ce97..c95faa0b138 100644
--- a/integration/scopes/package-lock.json
+++ b/integration/scopes/package-lock.json
@@ -870,9 +870,9 @@
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     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
     },
     "uri-js": {
       "version": "4.2.2",
diff --git a/integration/scopes/package.json b/integration/scopes/package.json
index ece032431e7..1664692ebf3 100644
--- a/integration/scopes/package.json
+++ b/integration/scopes/package.json
@@ -17,7 +17,7 @@
     "fastify": "2.10.0",
     "reflect-metadata": "0.1.13",
     "rxjs": "6.5.4",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "devDependencies": {
     "@types/node": "7.10.9",
diff --git a/integration/typegraphql/package-lock.json b/integration/typegraphql/package-lock.json
index c3a3bed974f..40c7ab31029 100644
--- a/integration/typegraphql/package-lock.json
+++ b/integration/typegraphql/package-lock.json
@@ -370,6 +370,12 @@
             "merge2": "^1.2.3",
             "slash": "^3.0.0"
           }
+        },
+        "typescript": {
+          "version": "3.7.5",
+          "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.5.tgz",
+          "integrity": "sha512-/P5lkRXkWHNAbcJIiHPfRoKqyd7bsyCma1hZNUGfn20qm64T6ZBlrzprymeu918H+mB/0rIg2gGK/BXkhhYgBw==",
+          "optional": true
         }
       }
     },
@@ -2543,9 +2549,9 @@
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     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
     },
     "unc-path-regex": {
       "version": "0.1.2",
diff --git a/integration/typegraphql/package.json b/integration/typegraphql/package.json
index d79c1bfdf8d..a4db2d08e15 100644
--- a/integration/typegraphql/package.json
+++ b/integration/typegraphql/package.json
@@ -21,7 +21,7 @@
     "rxjs": "6.5.4",
     "subscriptions-transport-ws": "0.9.16",
     "type-graphql": "0.17.6",
-    "typescript": "3.7.2",
+    "typescript": "3.8.3",
     "ws": "7.2.1"
   },
   "devDependencies": {
diff --git a/integration/typeorm/package-lock.json b/integration/typeorm/package-lock.json
index bbd1671e81c..8c5005a558d 100644
--- a/integration/typeorm/package-lock.json
+++ b/integration/typeorm/package-lock.json
@@ -1039,9 +1039,9 @@
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-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
     },
     "util-deprecate": {
       "version": "1.0.2",
diff --git a/integration/typeorm/package.json b/integration/typeorm/package.json
index 769986f42e1..d2f9ef22ad1 100644
--- a/integration/typeorm/package.json
+++ b/integration/typeorm/package.json
@@ -16,7 +16,7 @@
     "reflect-metadata": "0.1.13",
     "rxjs": "6.5.4",
     "typeorm": "0.2.24",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "devDependencies": {
     "@types/node": "7.10.9",
diff --git a/integration/websockets/package-lock.json b/integration/websockets/package-lock.json
index d464b05380d..e4ab0ec8c76 100644
--- a/integration/websockets/package-lock.json
+++ b/integration/websockets/package-lock.json
@@ -616,9 +616,9 @@
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     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
     },
     "util-deprecate": {
       "version": "1.0.2",
diff --git a/integration/websockets/package.json b/integration/websockets/package.json
index 0e3cbe77e0f..16c617b5b5f 100644
--- a/integration/websockets/package.json
+++ b/integration/websockets/package.json
@@ -16,7 +16,7 @@
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     "reflect-metadata": "0.1.13",
     "rxjs": "6.5.4",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "devDependencies": {
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diff --git a/package-lock.json b/package-lock.json
index 8a0f5cd5311..535844a8a51 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -18710,9 +18710,9 @@
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-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.6.4.tgz",
-      "integrity": "sha512-unoCll1+l+YK4i4F8f22TaNVPRHcD9PA3yCuZ8g5e0qGqlVlJ/8FSateOLLSagn+Yg5+ZwuPkL8LFUc0Jcvksg==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "uglify-js": {
diff --git a/package.json b/package.json
index 66a83279eaf..aab73cf1a5a 100644
--- a/package.json
+++ b/package.json
@@ -147,7 +147,7 @@
     "socket.io-client": "2.3.0",
     "supertest": "4.0.2",
     "ts-node": "8.6.2",
-    "typescript": "3.6.4",
+    "typescript": "3.8.3",
     "wrk": "1.2.0"
   },
   "collective": {
diff --git a/sample/01-cats-app/package-lock.json b/sample/01-cats-app/package-lock.json
index a61d574e06e..4bc434418ff 100644
--- a/sample/01-cats-app/package-lock.json
+++ b/sample/01-cats-app/package-lock.json
@@ -11643,9 +11643,9 @@
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-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
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+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/01-cats-app/package.json b/sample/01-cats-app/package.json
index 4bf2326207e..9b3dcf7efd5 100644
--- a/sample/01-cats-app/package.json
+++ b/sample/01-cats-app/package.json
@@ -48,7 +48,7 @@
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     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "jest": {
     "moduleFileExtensions": [
diff --git a/sample/02-gateways/package-lock.json b/sample/02-gateways/package-lock.json
index c51bc191ce5..2ab7423209c 100644
--- a/sample/02-gateways/package-lock.json
+++ b/sample/02-gateways/package-lock.json
@@ -11799,9 +11799,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "uid2": {
diff --git a/sample/02-gateways/package.json b/sample/02-gateways/package.json
index 1b45bb56250..a9c8fe3cbeb 100644
--- a/sample/02-gateways/package.json
+++ b/sample/02-gateways/package.json
@@ -53,6 +53,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/03-microservices/package-lock.json b/sample/03-microservices/package-lock.json
index 0f195eee0f0..76f51f6953c 100644
--- a/sample/03-microservices/package-lock.json
+++ b/sample/03-microservices/package-lock.json
@@ -11424,9 +11424,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/03-microservices/package.json b/sample/03-microservices/package.json
index ef34ffcc7af..65cfaa5e265 100644
--- a/sample/03-microservices/package.json
+++ b/sample/03-microservices/package.json
@@ -49,6 +49,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/04-grpc/package-lock.json b/sample/04-grpc/package-lock.json
index ba8ad028f8d..7f8923905a4 100644
--- a/sample/04-grpc/package-lock.json
+++ b/sample/04-grpc/package-lock.json
@@ -11585,9 +11585,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/04-grpc/package.json b/sample/04-grpc/package.json
index eec0948a4a6..62e1970b81b 100644
--- a/sample/04-grpc/package.json
+++ b/sample/04-grpc/package.json
@@ -50,6 +50,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/05-sql-typeorm/package-lock.json b/sample/05-sql-typeorm/package-lock.json
index 948a89a0b95..286bad7687f 100644
--- a/sample/05-sql-typeorm/package-lock.json
+++ b/sample/05-sql-typeorm/package-lock.json
@@ -11826,9 +11826,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/05-sql-typeorm/package.json b/sample/05-sql-typeorm/package.json
index f3a031af6b1..ebcc829d570 100644
--- a/sample/05-sql-typeorm/package.json
+++ b/sample/05-sql-typeorm/package.json
@@ -49,6 +49,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/06-mongoose/package-lock.json b/sample/06-mongoose/package-lock.json
index 63aa141bc44..50cd9a9db8a 100644
--- a/sample/06-mongoose/package-lock.json
+++ b/sample/06-mongoose/package-lock.json
@@ -11598,9 +11598,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/06-mongoose/package.json b/sample/06-mongoose/package.json
index be8baeb42c5..306215017b0 100644
--- a/sample/06-mongoose/package.json
+++ b/sample/06-mongoose/package.json
@@ -49,6 +49,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/07-sequelize/package-lock.json b/sample/07-sequelize/package-lock.json
index 6eaf0edebb6..9cc15ce3c95 100644
--- a/sample/07-sequelize/package-lock.json
+++ b/sample/07-sequelize/package-lock.json
@@ -11782,9 +11782,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
     },
     "union-value": {
       "version": "1.0.1",
diff --git a/sample/07-sequelize/package.json b/sample/07-sequelize/package.json
index 78182b0ef6b..cc35fb1df00 100644
--- a/sample/07-sequelize/package.json
+++ b/sample/07-sequelize/package.json
@@ -29,7 +29,7 @@
     "rxjs": "6.5.4",
     "sequelize": "5.21.5",
     "sequelize-typescript": "1.1.0",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "devDependencies": {
     "@types/sequelize": "4.28.8",
@@ -52,6 +52,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/08-webpack/package-lock.json b/sample/08-webpack/package-lock.json
index 9e07f52060d..c2a212ebc09 100644
--- a/sample/08-webpack/package-lock.json
+++ b/sample/08-webpack/package-lock.json
@@ -6176,9 +6176,9 @@
       "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c="
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w=="
     },
     "union-value": {
       "version": "1.0.0",
diff --git a/sample/08-webpack/package.json b/sample/08-webpack/package.json
index be3d7b017e4..eb55f199643 100644
--- a/sample/08-webpack/package.json
+++ b/sample/08-webpack/package.json
@@ -16,7 +16,7 @@
     "@nestjs/platform-express": "6.11.8",
     "reflect-metadata": "0.1.13",
     "rxjs": "6.5.4",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "devDependencies": {
     "@types/node": "12.12.21",
diff --git a/sample/10-fastify/package-lock.json b/sample/10-fastify/package-lock.json
index a733c5eb3bd..0fb5712e911 100644
--- a/sample/10-fastify/package-lock.json
+++ b/sample/10-fastify/package-lock.json
@@ -11353,9 +11353,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/10-fastify/package.json b/sample/10-fastify/package.json
index 9f9660a5c8a..8ae90a42c29 100644
--- a/sample/10-fastify/package.json
+++ b/sample/10-fastify/package.json
@@ -48,6 +48,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/11-swagger/package-lock.json b/sample/11-swagger/package-lock.json
index d58491eae40..d9a7fde1d3d 100644
--- a/sample/11-swagger/package-lock.json
+++ b/sample/11-swagger/package-lock.json
@@ -11426,9 +11426,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/11-swagger/package.json b/sample/11-swagger/package.json
index cb818bcd521..2c0981a15ec 100644
--- a/sample/11-swagger/package.json
+++ b/sample/11-swagger/package.json
@@ -49,6 +49,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/12-graphql-apollo/package-lock.json b/sample/12-graphql-apollo/package-lock.json
index 81408ea6cda..3ba1a3ccff6 100644
--- a/sample/12-graphql-apollo/package-lock.json
+++ b/sample/12-graphql-apollo/package-lock.json
@@ -2337,8 +2337,7 @@
         "glob-parent": "^5.1.0",
         "globby": "^10.0.1",
         "is-negated-glob": "^1.0.0",
-        "multimatch": "^4.0.0",
-        "typescript": "~3.7.2"
+        "multimatch": "^4.0.0"
       },
       "dependencies": {
         "globby": {
@@ -12567,9 +12566,10 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
+      "dev": true
     },
     "unc-path-regex": {
       "version": "0.1.2",
diff --git a/sample/12-graphql-apollo/package.json b/sample/12-graphql-apollo/package.json
index 15eb0df6ea8..c4e44af223d 100644
--- a/sample/12-graphql-apollo/package.json
+++ b/sample/12-graphql-apollo/package.json
@@ -51,6 +51,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/13-mongo-typeorm/package-lock.json b/sample/13-mongo-typeorm/package-lock.json
index 0e1f05b5101..a47a964c955 100644
--- a/sample/13-mongo-typeorm/package-lock.json
+++ b/sample/13-mongo-typeorm/package-lock.json
@@ -11764,9 +11764,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/13-mongo-typeorm/package.json b/sample/13-mongo-typeorm/package.json
index 0fb1e6c44c8..44cda346816 100644
--- a/sample/13-mongo-typeorm/package.json
+++ b/sample/13-mongo-typeorm/package.json
@@ -48,6 +48,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/14-mongoose-base/package-lock.json b/sample/14-mongoose-base/package-lock.json
index 36e160cbc6c..f2fe04dbc20 100644
--- a/sample/14-mongoose-base/package-lock.json
+++ b/sample/14-mongoose-base/package-lock.json
@@ -11537,9 +11537,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/14-mongoose-base/package.json b/sample/14-mongoose-base/package.json
index 2c85d1ab2e9..7abf1cb4b2c 100644
--- a/sample/14-mongoose-base/package.json
+++ b/sample/14-mongoose-base/package.json
@@ -46,6 +46,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/15-mvc/package-lock.json b/sample/15-mvc/package-lock.json
index db870ed4cd1..fb5c8638c52 100644
--- a/sample/15-mvc/package-lock.json
+++ b/sample/15-mvc/package-lock.json
@@ -11519,9 +11519,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "uglify-js": {
diff --git a/sample/15-mvc/package.json b/sample/15-mvc/package.json
index 90103a084da..d2bcb4e85f3 100644
--- a/sample/15-mvc/package.json
+++ b/sample/15-mvc/package.json
@@ -47,6 +47,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/16-gateways-ws/package-lock.json b/sample/16-gateways-ws/package-lock.json
index 4f5503aa7f0..9a98453543d 100644
--- a/sample/16-gateways-ws/package-lock.json
+++ b/sample/16-gateways-ws/package-lock.json
@@ -11420,9 +11420,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/16-gateways-ws/package.json b/sample/16-gateways-ws/package.json
index 6719c298229..f32965ae565 100644
--- a/sample/16-gateways-ws/package.json
+++ b/sample/16-gateways-ws/package.json
@@ -51,6 +51,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/17-mvc-fastify/package-lock.json b/sample/17-mvc-fastify/package-lock.json
index 40dd45245ca..6ff6f4e2135 100644
--- a/sample/17-mvc-fastify/package-lock.json
+++ b/sample/17-mvc-fastify/package-lock.json
@@ -10883,9 +10883,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "uglify-js": {
diff --git a/sample/17-mvc-fastify/package.json b/sample/17-mvc-fastify/package.json
index 2f2d0768154..4980a8d5cfb 100644
--- a/sample/17-mvc-fastify/package.json
+++ b/sample/17-mvc-fastify/package.json
@@ -50,6 +50,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/18-context/package-lock.json b/sample/18-context/package-lock.json
index 7139c83c556..6340dcdbd20 100644
--- a/sample/18-context/package-lock.json
+++ b/sample/18-context/package-lock.json
@@ -10592,9 +10592,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/18-context/package.json b/sample/18-context/package.json
index c0adb7f2c93..b14c3e109fb 100644
--- a/sample/18-context/package.json
+++ b/sample/18-context/package.json
@@ -42,6 +42,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/19-auth-jwt/package-lock.json b/sample/19-auth-jwt/package-lock.json
index 5d96590c96c..6cf9163cd49 100644
--- a/sample/19-auth-jwt/package-lock.json
+++ b/sample/19-auth-jwt/package-lock.json
@@ -13077,9 +13077,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/19-auth-jwt/package.json b/sample/19-auth-jwt/package.json
index 56a58fdf25b..15a4824bdf0 100644
--- a/sample/19-auth-jwt/package.json
+++ b/sample/19-auth-jwt/package.json
@@ -52,7 +52,7 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "jest": {
     "moduleFileExtensions": [
diff --git a/sample/20-cache/package-lock.json b/sample/20-cache/package-lock.json
index 1225b8172cc..14f44777cfb 100644
--- a/sample/20-cache/package-lock.json
+++ b/sample/20-cache/package-lock.json
@@ -11185,9 +11185,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/20-cache/package.json b/sample/20-cache/package.json
index eeac864c1e1..08d2d79a6ef 100644
--- a/sample/20-cache/package.json
+++ b/sample/20-cache/package.json
@@ -47,6 +47,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/21-serializer/package-lock.json b/sample/21-serializer/package-lock.json
index 211f0e509c2..e60be70d4d6 100644
--- a/sample/21-serializer/package-lock.json
+++ b/sample/21-serializer/package-lock.json
@@ -11113,9 +11113,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/21-serializer/package.json b/sample/21-serializer/package.json
index c378eb24486..c9de2888567 100644
--- a/sample/21-serializer/package.json
+++ b/sample/21-serializer/package.json
@@ -46,6 +46,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/22-graphql-prisma/package-lock.json b/sample/22-graphql-prisma/package-lock.json
index bd58908de0a..4dcba7aa74e 100644
--- a/sample/22-graphql-prisma/package-lock.json
+++ b/sample/22-graphql-prisma/package-lock.json
@@ -2347,8 +2347,7 @@
         "glob-parent": "^5.1.0",
         "globby": "^10.0.1",
         "is-negated-glob": "^1.0.0",
-        "multimatch": "^4.0.0",
-        "typescript": "~3.7.2"
+        "multimatch": "^4.0.0"
       },
       "dependencies": {
         "globby": {
@@ -13093,9 +13092,10 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
+      "dev": true
     },
     "unc-path-regex": {
       "version": "0.1.2",
diff --git a/sample/22-graphql-prisma/package.json b/sample/22-graphql-prisma/package.json
index 36eb7da65f1..4e091bc108e 100644
--- a/sample/22-graphql-prisma/package.json
+++ b/sample/22-graphql-prisma/package.json
@@ -50,6 +50,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/22-graphql-prisma/yarn.lock b/sample/22-graphql-prisma/yarn.lock
index 0241b24e374..d8e98c826bd 100644
--- a/sample/22-graphql-prisma/yarn.lock
+++ b/sample/22-graphql-prisma/yarn.lock
@@ -7379,9 +7379,9 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-typescript@3.7.2:
-  version "3.7.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.2.tgz#27e489b95fa5909445e9fef5ee48d81697ad18fb"
+typescript@3.8.3:
+  version "3.8.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.8.3.tgz#409eb8544ea0335711205869ec458ab109ee1061"
 
 typescript@^3.6.4:
   version "3.7.4"
diff --git a/sample/23-type-graphql/package-lock.json b/sample/23-type-graphql/package-lock.json
index 120a0b3e214..87c83d8f1c7 100644
--- a/sample/23-type-graphql/package-lock.json
+++ b/sample/23-type-graphql/package-lock.json
@@ -2347,8 +2347,7 @@
         "glob-parent": "^5.1.0",
         "globby": "^10.0.1",
         "is-negated-glob": "^1.0.0",
-        "multimatch": "^4.0.0",
-        "typescript": "~3.7.2"
+        "multimatch": "^4.0.0"
       },
       "dependencies": {
         "globby": {
@@ -12654,9 +12653,10 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ=="
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
+      "dev": true
     },
     "unc-path-regex": {
       "version": "0.1.2",
diff --git a/sample/23-type-graphql/package.json b/sample/23-type-graphql/package.json
index 5fed1d221a6..f66a99f5dba 100644
--- a/sample/23-type-graphql/package.json
+++ b/sample/23-type-graphql/package.json
@@ -51,6 +51,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/24-serve-static/package-lock.json b/sample/24-serve-static/package-lock.json
index daa612be737..0e243ba362a 100644
--- a/sample/24-serve-static/package-lock.json
+++ b/sample/24-serve-static/package-lock.json
@@ -11385,9 +11385,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/24-serve-static/package.json b/sample/24-serve-static/package.json
index 161bf30b5f3..e38ac90a9b3 100644
--- a/sample/24-serve-static/package.json
+++ b/sample/24-serve-static/package.json
@@ -48,6 +48,6 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   }
 }
diff --git a/sample/25-dynamic-modules/package-lock.json b/sample/25-dynamic-modules/package-lock.json
index c070dd4a3de..e8a52205b62 100644
--- a/sample/25-dynamic-modules/package-lock.json
+++ b/sample/25-dynamic-modules/package-lock.json
@@ -12516,9 +12516,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/25-dynamic-modules/package.json b/sample/25-dynamic-modules/package.json
index ce2d5ca93fe..47e20c7d134 100644
--- a/sample/25-dynamic-modules/package.json
+++ b/sample/25-dynamic-modules/package.json
@@ -48,7 +48,7 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "jest": {
     "moduleFileExtensions": [
diff --git a/sample/26-queues/package-lock.json b/sample/26-queues/package-lock.json
index 8a6206feb70..1ae184d0a1b 100644
--- a/sample/26-queues/package-lock.json
+++ b/sample/26-queues/package-lock.json
@@ -13015,9 +13015,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/26-queues/package.json b/sample/26-queues/package.json
index 4607ebc2f4b..15edca1f694 100644
--- a/sample/26-queues/package.json
+++ b/sample/26-queues/package.json
@@ -51,7 +51,7 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "jest": {
     "moduleFileExtensions": [
diff --git a/sample/27-scheduling/package-lock.json b/sample/27-scheduling/package-lock.json
index 6ac97bed869..48179bb93bb 100644
--- a/sample/27-scheduling/package-lock.json
+++ b/sample/27-scheduling/package-lock.json
@@ -12637,9 +12637,9 @@
       }
     },
     "typescript": {
-      "version": "3.7.2",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.7.2.tgz",
-      "integrity": "sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==",
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.8.3.tgz",
+      "integrity": "sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==",
       "dev": true
     },
     "union-value": {
diff --git a/sample/27-scheduling/package.json b/sample/27-scheduling/package.json
index e0d0df5e07e..76be045b521 100644
--- a/sample/27-scheduling/package.json
+++ b/sample/27-scheduling/package.json
@@ -50,7 +50,7 @@
     "eslint": "6.8.0",
     "eslint-config-prettier": "6.10.0",
     "eslint-plugin-import": "2.20.1",
-    "typescript": "3.7.2"
+    "typescript": "3.8.3"
   },
   "jest": {
     "moduleFileExtensions": [