diff --git a/package.json b/package.json
index d6467d36..7eed316a 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "protractor": "~7.0.0",
     "ts-node": "^10.5.0",
     "tsickle": "^0.39.1",
-    "typescript": "4.1.5",
+    "typescript": "4.9.5",
     "zone.js": "^0.11.4"
   }
 }
diff --git a/samples/demo-app/package.json b/samples/demo-app/package.json
index a30a0406..e63c400e 100644
--- a/samples/demo-app/package.json
+++ b/samples/demo-app/package.json
@@ -30,6 +30,6 @@
     "@angular/language-service": "^11.2.14",
     "@types/node": "^16.11.12",
     "ts-node": "~10.5.0",
-    "typescript": "~4.1.5"
+    "typescript": "~4.9.5"
   }
 }