diff --git a/package.json b/package.json
index 9f91dbde..89ac84b0 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,8 @@
     "react": "^15.4.2",
     "react-dom": "^15.4.2",
     "react-helmet": "^3.3.0",
-    "react-router": "4.0.0-alpha.6"
+    "react-router": "4.0.0-alpha.6",
+    "react-test-renderer": "^15.4.2"
   },
   "scripts": {
     "clean": "rm -rf build/*",
diff --git a/yarn.lock b/yarn.lock
index a0ebe475..e14f3cd5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4761,6 +4761,13 @@ react-side-effect@1.0.2:
   dependencies:
     fbjs "0.1.0-alpha.10"
 
+react-test-renderer:
+  version "15.4.2"
+  resolved "https://registry.yarnpkg.com/react-test-renderer/-/react-test-renderer-15.4.2.tgz#27e1dff5d26d0e830f99614c487622bc831416f3"
+  dependencies:
+    fbjs "^0.8.4"
+    object-assign "^4.1.0"
+
 read-all-stream@^3.0.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/read-all-stream/-/read-all-stream-3.1.0.tgz#35c3e177f2078ef789ee4bfafa4373074eaef4fa"