diff --git a/package-lock.json b/package-lock.json
index b912653c6..4e7d7afba 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -259,6 +259,14 @@
         "tslib": "2.1.0",
         "typescript": "4.1.5",
         "webpack-sources": "2.2.0"
+      },
+      "dependencies": {
+        "typescript": {
+          "version": "4.1.5",
+          "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.1.5.tgz",
+          "integrity": "sha512-6OSu9PTIzmn9TCDiovULTnET6BgXtDYL4Gg4szY+cGsc3JP1dQL8qvE8kShTRx1NIw4Q9IBHlwODjkjWEtMUyA==",
+          "dev": true
+        }
       }
     },
     "@angular-devkit/build-webpack": {
@@ -17458,9 +17466,9 @@
       }
     },
     "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
     },
     "ua-parser-js": {
diff --git a/package.json b/package.json
index 7fe81434a..98875de57 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "protractor": "~7.0.0",
     "ts-node": "^9.1.1",
     "tsickle": "^0.39.1",
-    "typescript": "4.1.5",
+    "typescript": "4.2.3",
     "zone.js": "^0.11.4"
   }
 }
diff --git a/samples/demo-app/package.json b/samples/demo-app/package.json
index cc8b155c6..2bf588d54 100644
--- a/samples/demo-app/package.json
+++ b/samples/demo-app/package.json
@@ -30,6 +30,6 @@
     "@angular/language-service": "^11.2.7",
     "@types/node": "^14.14.36",
     "ts-node": "~9.1.1",
-    "typescript": "~4.1.5"
+    "typescript": "~4.2.3"
   }
 }