diff --git a/package.json b/package.json
index 90ad925..03c1f8e 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "rollup-plugin-terser": "^7.0.2",
     "sinon": "^11.1.2",
     "tslib": "^2.1.0",
-    "typescript": "^4.2.3"
+    "typescript": "~4.3.5"
   },
   "scripts": {
     "build": "NODE_ENV=production rollup -c",
diff --git a/yarn.lock b/yarn.lock
index e3d9ff0..dee3022 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3553,10 +3553,10 @@ type-is@~1.6.17:
     media-typer "0.3.0"
     mime-types "~2.1.24"
 
-typescript@^4.2.3:
-  version "4.4.2"
-  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.4.2.tgz#6d618640d430e3569a1dfb44f7d7e600ced3ee86"
-  integrity sha512-gzP+t5W4hdy4c+68bfcv0t400HVJMMd2+H9B7gae1nQlBzCqvrXX+6GL/b3GAgyTH966pzrZ70/fRjwAtZksSQ==
+typescript@~4.3.5:
+  version "4.3.5"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-4.3.5.tgz#4d1c37cc16e893973c45a06886b7113234f119f4"
+  integrity sha512-DqQgihaQ9cUrskJo9kIyW/+g0Vxsk8cDtZ52a3NGh0YNTfpUSArXSohyUGnvbPazEPLu398C0UxmKSOrPumUzA==
 
 ua-parser-js@^0.7.28:
   version "0.7.28"