diff --git a/package.json b/package.json
index 6433a2b..7b73f44 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
   "devDependencies": {
     "@babel/cli": "^7.2.3",
     "@babel/core": "^7.4.0",
-    "@babel/plugin-proposal-class-properties": "^7.0.0-rc.1",
+    "@babel/plugin-proposal-class-properties": "^7.4.0",
     "@babel/plugin-proposal-object-rest-spread": "^7.0.0-rc.1",
     "@babel/polyfill": "^7.0.0-rc.1",
     "@babel/preset-env": "^7.0.0-rc.1",