diff --git a/package.json b/package.json
index 2db2cd7..79e3e9b 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "prettier": "^1.18.2",
     "rimraf": "^3.0.0",
     "ts-node": "^8.3.0",
-    "typescript": "^3.5.2"
+    "typescript": "^4.0.3"
   },
   "repository": "git@github.com:Slynova-Org/hash.git",
   "bugs": {