diff --git a/static/blockly/package.json b/static/blockly/package.json
index b94f0bc..b0cc8e5 100644
--- a/static/blockly/package.json
+++ b/static/blockly/package.json
@@ -27,7 +27,7 @@
   "devDependencies": {
     "eslint": "^5.13.0",
     "google-closure-compiler": "^20190121.0.0",
-    "google-closure-library": "^20190121.0.0",
+    "google-closure-library": "^20200830.0.0",
     "gulp": "^3.9.1",
     "gulp-concat": "^2.6.1",
     "gulp-insert": "^0.5.0",