diff --git a/package.json b/package.json
index e333d40..4657f79 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
   "devDependencies": {
     "@babel/cli": "7.5.5",
     "@babel/core": "7.4.5",
-    "@babel/plugin-proposal-class-properties": "7.4.4",
+    "@babel/plugin-proposal-class-properties": "7.13.0",
     "@babel/plugin-proposal-object-rest-spread": "7.5.5",
     "@babel/preset-env": "7.4.5",
     "@babel/preset-typescript": "7.3.3",