diff --git a/package.json b/package.json
index d902e54da4..1a976e622a 100644
--- a/package.json
+++ b/package.json
@@ -92,7 +92,7 @@
     "tslint": "^5.20.1",
     "tslint-config-prettier": "^1.15.0",
     "tslint-react": "^3.6.0",
-    "typescript": "^3.7.4",
+    "typescript": "^4.9.5",
     "watch": "^1.0.2",
     "webpack": "^4.41.5",
     "webpack-livereload-plugin": "^2.2.0",
diff --git a/packages/build-essentials/package.json b/packages/build-essentials/package.json
index 6c8d432ddf..acbca5a8ba 100644
--- a/packages/build-essentials/package.json
+++ b/packages/build-essentials/package.json
@@ -48,7 +48,7 @@
     "tslint": "^5.11.0",
     "tslint-config-prettier": "^1.15.0",
     "tslint-react": "^3.6.0",
-    "typescript": "^3.2.2",
+    "typescript": "^4.9.5",
     "url-loader": "^3.0.0",
     "watch": "^1.0.2",
     "webpack": "^4.41.5",
diff --git a/packages/neos-ui-extensibility/package.json b/packages/neos-ui-extensibility/package.json
index 3198dca347..60772c384a 100644
--- a/packages/neos-ui-extensibility/package.json
+++ b/packages/neos-ui-extensibility/package.json
@@ -19,7 +19,7 @@
   "devDependencies": {
     "@neos-project/babel-preset-neos-ui": "5.3.11",
     "@neos-project/jest-preset-neos-ui": "5.3.11",
-    "typescript": "3.2.2"
+    "typescript": "4.9.5"
   },
   "dependencies": {
     "@neos-project/build-essentials": "5.2.5",
diff --git a/packages/positional-array-sorter/package.json b/packages/positional-array-sorter/package.json
index 408fd39791..3161b10517 100644
--- a/packages/positional-array-sorter/package.json
+++ b/packages/positional-array-sorter/package.json
@@ -20,7 +20,7 @@
   "devDependencies": {
     "@neos-project/build-essentials": "5.3.11",
     "@neos-project/jest-preset-neos-ui": "5.3.11",
-    "typescript": "3.2.2"
+    "typescript": "4.9.5"
   },
   "jest": {
     "preset": "@neos-project/jest-preset-neos-ui"
diff --git a/yarn.lock b/yarn.lock
index 2732a482b1..9acb97da74 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -17009,12 +17009,12 @@ typescript-tuple@^2.2.1:
   dependencies:
     typescript-compare "^0.0.2"
 
-typescript@3.2.2:
-  version "3.2.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.2.2.tgz#fe8101c46aa123f8353523ebdcf5730c2ae493e5"
-  integrity sha512-VCj5UiSyHBjwfYacmDuc/NOk4QQixbE+Wn7MFJuS0nRuPQbof132Pw4u53dm264O8LPc2MVsc7RJNml5szurkg==
+typescript@4.9.5, typescript@^4.9.5:
+  version "4.9.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.9.5.tgz#095979f9bcc0d09da324d58d03ce8f8374cbe65a"
+  integrity sha512-1FXk9E2Hm+QzZQ7z+McJiHL4NW1F2EzMu9Nq9i3zAaGqibafqYwCVU6WyWAuyQRRzOlxou8xZSyXLEN8oKj24g==
 
-typescript@^3.2.2, typescript@^3.3.3, typescript@^3.7.4:
+typescript@^3.2.2, typescript@^3.3.3:
   version "3.7.4"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.7.4.tgz#1743a5ec5fef6a1fa9f3e4708e33c81c73876c19"
   integrity sha512-A25xv5XCtarLwXpcDNZzCGvW2D1S3/bACratYBx2sax8PefsFhlYmkQicKHvpYflFS8if4zne5zT5kpJ7pzuvw==
@@ -17477,9 +17477,9 @@ vfile-location@^3.0.0:
   integrity sha512-aLEIZKv/oxuCDZ8lkJGhuhztf/BW4M+iHdCwglA/eWc+vtuRFJj8EtgceYFX4LRjOhCAAiNHsKGssC6onJ+jbA==
 
 vfile-message@^1.0.0, vfile-message@^2.0.0, vfile-message@^2.0.2:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/vfile-message/-/vfile-message-2.0.2.tgz#75ba05090ec758fa8420f2c11ce049bcddd8cf3e"
-  integrity sha512-gNV2Y2fDvDOOqq8bEe7cF3DXU6QgV4uA9zMR2P8tix11l1r7zju3zry3wZ8sx+BEfuO6WQ7z2QzfWTvqHQiwsA==
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/vfile-message/-/vfile-message-2.0.4.tgz#5b43b88171d409eae58477d13f23dd41d52c371a"
+  integrity sha512-DjssxRGkMvifUOJre00juHoP9DPWuzjxKuMDrhNbk2TdaYYBNMStsNhEOt3idrtI12VQYM/1+iM0KOzXi4pxwQ==
   dependencies:
     "@types/unist" "^2.0.0"
     unist-util-stringify-position "^2.0.0"