diff --git a/package.json b/package.json
index b14c818..989d3f4 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@sapphirecode/graphviz-builder",
   "main": "dist/lib/index.js",
-  "version": "1.3.2",
+  "version": "1.3.3",
   "author": {
     "name": "Timo Hocker",
     "email": "timo@scode.ovh"
@@ -19,7 +19,7 @@
     "ava": "^3.8.2",
     "eslint": "^7.0.0",
     "nyc": "^15.0.1",
-    "typescript": "^3.9.2"
+    "typescript": "^4.0.2"
   },
   "scripts": {
     "lint": "eslint . --ext .js,.jsx,.ts,.tsx,.vue,.mjs",
@@ -37,4 +37,4 @@
     "graphviz",
     "generator"
   ]
-}
\ No newline at end of file
+}
diff --git a/yarn.lock b/yarn.lock
index 1649836..cbbd2dc 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3035,10 +3035,10 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
-typescript@^3.9.2:
-  version "3.9.7"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.9.7.tgz#98d600a5ebdc38f40cb277522f12dc800e9e25fa"
-  integrity sha512-BLbiRkiBzAwsjut4x/dsibSTB6yWpwT5qWmC2OfuCg3GgVQCSgMs4vEctYPhsaGtd0AeuuHMkjZ2h2WG8MSzRw==
+typescript@^4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.0.2.tgz#7ea7c88777c723c681e33bf7988be5d008d05ac2"
+  integrity sha512-e4ERvRV2wb+rRZ/IQeb3jm2VxBsirQLpQhdxplZ2MEzGvDkkMmPglecnNDfSUBivMjP93vRbngYYDQqQ/78bcQ==
 
 unique-string@^2.0.0:
   version "2.0.0"