diff --git a/package.json b/package.json
index 12c1d37a..a18ba0a6 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "fancy-test": "^1.4.1",
     "mocha": "^5.2.0",
     "ts-node": "^7.0.1",
-    "typescript": "^3.2.1"
+    "typescript": "3.8.3"
   },
   "engines": {
     "node": ">=8.0.0"
diff --git a/yarn.lock b/yarn.lock
index fe79e8ae..bb502b03 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1336,10 +1336,10 @@ type-fest@^0.5.2:
   resolved "https://registry.yarnpkg.com/type-fest/-/type-fest-0.5.2.tgz#d6ef42a0356c6cd45f49485c3b6281fc148e48a2"
   integrity sha512-DWkS49EQKVX//Tbupb9TFa19c7+MK1XmzkrZUR8TAktmE/DizXoaoJV6TZ/tSIPXipqNiRI6CyAe7x69Jb6RSw==
 
-typescript@^3.2.1:
-  version "3.7.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.2.tgz#27e489b95fa5909445e9fef5ee48d81697ad18fb"
-  integrity sha512-ml7V7JfiN2Xwvcer+XAf2csGO1bPBdRbFCkYBczNZggrBZ9c7G3riSUeJmqEU5uOtXNPMhE3n+R4FA/3YOAWOQ==
+typescript@3.8.3:
+  version "3.8.3"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.8.3.tgz#409eb8544ea0335711205869ec458ab109ee1061"
+  integrity sha512-MYlEfn5VrLNsgudQTVJeNaQFUAI7DkhnOjdpAp4T+ku1TfQClewlbSuTVHiA+8skNBgaf02TL/kLOvig4y3G8w==
 
 universalify@^0.1.0:
   version "0.1.2"