diff --git a/package.json b/package.json
index ff844fb..da55e7c 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "gulp-task-graph-visualizer": "^1.0.0",
     "gulp-tsfmt": "^1.0.2",
     "gulp-tslint": "^7.0.1",
-    "gulp-typescript": "^3.1.3",
+    "gulp-typescript": "^4.0.0",
     "gulp-util": "^3.0.7",
     "jsdom": "^9.8.3",
     "jsx-chai": "^4.0.0",