diff --git a/package.json b/package.json
index 6173e4f..837ef0b 100644
--- a/package.json
+++ b/package.json
@@ -38,7 +38,7 @@
     "ts-jest": "^24.1.0",
     "tslint": "^5.16.0",
     "tslint-config-airbnb": "^5.11.2",
-    "typescript": "^3.6.3"
+    "typescript": "^4.3.5"
   },
   "dependencies": {
     "graylog2": "^0.2.1",
diff --git a/yarn.lock b/yarn.lock
index 6c8afdc..5caaf8b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3271,10 +3271,14 @@ typedarray@^0.0.6:
   version "0.0.6"
   resolved "https://registry.yarnpkg.com/typedarray/-/typedarray-0.0.6.tgz#867ac74e3864187b1d3d47d996a78ec5c8830777"
 
-typescript@^3.4.3, typescript@^3.6.3:
+typescript@^3.4.3:
   version "3.6.3"
   resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.6.3.tgz#fea942fabb20f7e1ca7164ff626f1a9f3f70b4da"
 
+typescript@^4.3.5:
+  version "4.3.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.3.5.tgz#4d1c37cc16e893973c45a06886b7113234f119f4"
+
 uglify-js@^3.1.4:
   version "3.5.11"
   resolved "https://registry.yarnpkg.com/uglify-js/-/uglify-js-3.5.11.tgz#833442c0aa29b3a7d34344c7c63adaa3f3504f6a"