diff --git a/package.json b/package.json
index 066eb348..3db2a4f5 100644
--- a/package.json
+++ b/package.json
@@ -36,6 +36,6 @@
     "semantic-ui-less": "^2.2.4"
   },
   "dependencies": {
-    "pxt-core": "0.11.38"
+    "pxt-core": "0.11.39"
   }
 }