diff --git a/package.json b/package.json
index 457c42de..49bf3009 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,7 @@
     "node-sass": "^3.9.2",
     "randomcolor": "^0.4.4",
     "react": "^15.3.0",
+    "react-addons-pure-render-mixin": "15.3.1",
     "react-collapse": "^2.3.3",
     "react-dom": "15.3.0",
     "react-file-reader-input": "^1.1.0",