diff --git a/npm-shrinkwrap.json b/npm-shrinkwrap.json
index 49be7d2d3..6d93f511c 100644
--- a/npm-shrinkwrap.json
+++ b/npm-shrinkwrap.json
@@ -3726,6 +3726,30 @@
         }
       }
     },
+    "portfinder": {
+      "version": "0.4.0",
+      "from": "portfinder@0.4.0",
+      "resolved": "https://registry.npmjs.org/portfinder/-/portfinder-0.4.0.tgz",
+      "dependencies": {
+        "async": {
+          "version": "0.9.0",
+          "from": "async@0.9.0",
+          "resolved": "https://registry.npmjs.org/async/-/async-0.9.0.tgz"
+        },
+        "mkdirp": {
+          "version": "0.5.1",
+          "from": "mkdirp@>=0.5.0 <0.6.0",
+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
+          "dependencies": {
+            "minimist": {
+              "version": "0.0.8",
+              "from": "minimist@0.0.8",
+              "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz"
+            }
+          }
+        }
+      }
+    },
     "progress": {
       "version": "1.1.8",
       "from": "progress@>=1.1.8 <2.0.0",
diff --git a/package.json b/package.json
index fcd8aad3f..3aae018a1 100644
--- a/package.json
+++ b/package.json
@@ -86,6 +86,7 @@
     "babel-eslint": "4.1.1",
     "eslint": "1.3.1",
     "eslint-plugin-react": "3.3.1",
+    "portfinder": "0.4.0",
     "temp": "0.8.3"
   }
 }