diff --git a/functions/package-lock.json b/functions/package-lock.json
index 96edd43..97b1490 100644
--- a/functions/package-lock.json
+++ b/functions/package-lock.json
@@ -2063,9 +2063,9 @@
       }
     },
     "typescript": {
-      "version": "4.1.3",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.1.3.tgz",
-      "integrity": "sha512-B3ZIOf1IKeH2ixgHhj6la6xdwR9QrLC5d1VKeCSY4tvkqhF2eqd9O7txNlS0PO3GrBAFIdr3L1ndNwteUbZLYg==",
+      "version": "4.2.4",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.2.4.tgz",
+      "integrity": "sha512-V+evlYHZnQkaz8TRBuxTA92yZBPotr5H+WhQ7bD3hZUndx5tGOa1fuCgeSjxAzM1RiN5IzvadIXTVefuuwZCRg==",
       "dev": true
     },
     "unique-string": {
diff --git a/functions/package.json b/functions/package.json
index 4455d69..017c00c 100644
--- a/functions/package.json
+++ b/functions/package.json
@@ -19,7 +19,7 @@
     "jsdom": "16.4.0"
   },
   "devDependencies": {
-    "typescript": "4.1.3",
+    "typescript": "4.2.4",
     "firebase-functions-test": "0.2.3"
   },
   "private": true