diff --git a/package.json b/package.json
index 1655211..3791631 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "@babel/cli": "7.2.3",
     "@babel/core": "7.4.0",
     "@babel/node": "7.2.2",
-    "@babel/plugin-proposal-class-properties": "7.0.0",
+    "@babel/plugin-proposal-class-properties": "7.4.0",
     "@babel/plugin-proposal-optional-chaining": "7.0.0",
     "@babel/plugin-transform-runtime": "7.0.0",
     "@babel/preset-env": "^7.0.0",