diff --git a/package.json b/package.json
index 09edfae4..ecc27430 100644
--- a/package.json
+++ b/package.json
@@ -67,7 +67,7 @@
     "ts-loader": "^9.2.6",
     "ts-node": "^10.7.0",
     "tsyringe": "4.6.0",
-    "typescript": "4.3.5",
+    "typescript": "4.9.4",
     "web-ext-types": "^3.2.1",
     "webpack": "5.69.1",
     "webpack-cli": "4.9.2"
diff --git a/yarn.lock b/yarn.lock
index d7f97149..f485685e 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5749,10 +5749,10 @@ typedarray-to-buffer@^3.1.5:
   dependencies:
     is-typedarray "^1.0.0"
 
-typescript@4.3.5:
-  version "4.3.5"
-  resolved "https://registry.npmjs.org/typescript/-/typescript-4.3.5.tgz"
-  integrity sha512-DqQgihaQ9cUrskJo9kIyW/+g0Vxsk8cDtZ52a3NGh0YNTfpUSArXSohyUGnvbPazEPLu398C0UxmKSOrPumUzA==
+typescript@4.9.4:
+  version "4.9.4"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.9.4.tgz#a2a3d2756c079abda241d75f149df9d561091e78"
+  integrity sha512-Uz+dTXYzxXXbsFpM86Wh3dKCxrQqUcVMxwU54orwlJjOpO3ao8L7j5lH+dWfTwgCwIuM9GQ2kvVotzYJMXTBZg==
 
 typescript@^3.9.3:
   version "3.9.7"