diff --git a/package.json b/package.json
index d46b687cf..03244571e 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "babel-eslint": "6.0.4",
     "babel-plugin-external-helpers": "^6.4.0",
     "babel-plugin-react-transform": "^2.0.0",
-    "babel-plugin-transform-class-properties": "^6.4.0",
+    "babel-plugin-transform-class-properties": "^6.6.0",
     "babel-plugin-transform-decorators-legacy": "^1.3.4",
     "babel-plugin-transform-export-extensions": "^6.4.0",
     "babel-plugin-transform-function-bind": "^6.3.13",