diff --git a/samples/web-extension/typescript/package-lock.json b/samples/web-extension/typescript/package-lock.json
index c1590edc6..c3a5f58d9 100644
--- a/samples/web-extension/typescript/package-lock.json
+++ b/samples/web-extension/typescript/package-lock.json
@@ -13,7 +13,7 @@
       },
       "devDependencies": {
         "ts-loader": "^8.0.17",
-        "typescript": "^4.1.5",
+        "typescript": "^4.2.3",
         "web-ext-types": "^3.2.1",
         "webpack": "^5.26.3",
         "webpack-cli": "^4.2.0"
@@ -1418,9 +1418,9 @@
       "dev": true
     },
     "node_modules/typescript": {
-      "version": "4.1.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.1.5.tgz",
-      "integrity": "sha512-6OSu9PTIzmn9TCDiovULTnET6BgXtDYL4Gg4szY+cGsc3JP1dQL8qvE8kShTRx1NIw4Q9IBHlwODjkjWEtMUyA==",
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.2.3.tgz",
+      "integrity": "sha512-qOcYwxaByStAWrBf4x0fibwZvMRG+r4cQoTjbPtUlrWjBHbmCAww1i448U0GJ+3cNNEtebDteo/cHOR3xJ4wEw==",
       "dev": true,
       "bin": {
         "tsc": "bin/tsc",
@@ -2778,9 +2778,9 @@
       "dev": true
     },
     "typescript": {
-      "version": "4.1.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.1.5.tgz",
-      "integrity": "sha512-6OSu9PTIzmn9TCDiovULTnET6BgXtDYL4Gg4szY+cGsc3JP1dQL8qvE8kShTRx1NIw4Q9IBHlwODjkjWEtMUyA==",
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.2.3.tgz",
+      "integrity": "sha512-qOcYwxaByStAWrBf4x0fibwZvMRG+r4cQoTjbPtUlrWjBHbmCAww1i448U0GJ+3cNNEtebDteo/cHOR3xJ4wEw==",
       "dev": true
     },
     "uri-js": {
diff --git a/samples/web-extension/typescript/package.json b/samples/web-extension/typescript/package.json
index 12f7cfe2e..3d9a0b071 100644
--- a/samples/web-extension/typescript/package.json
+++ b/samples/web-extension/typescript/package.json
@@ -15,7 +15,7 @@
   },
   "devDependencies": {
     "ts-loader": "^8.0.17",
-    "typescript": "^4.1.5",
+    "typescript": "^4.2.3",
     "web-ext-types": "^3.2.1",
     "webpack": "^5.26.3",
     "webpack-cli": "^4.2.0"