diff --git a/backstop.config.js b/backstop.config.js
index aba2902..c15a464 100644
--- a/backstop.config.js
+++ b/backstop.config.js
@@ -1,5 +1,9 @@
 const request = require('sync-request');
 const queryString = require('query-string');
+const minimist = require('minimist');
+
+const args = minimist(process.argv);
+const port = args.port || 6006;
 
 /**
  * Create URL to stories.
@@ -10,10 +14,10 @@ const queryString = require('query-string');
 const createUrl = ({ kind: selectedKind, name: selectedStory }) => {
   const query = queryString.stringify({ selectedKind, selectedStory });
 
-  return `http://localhost:6006/iframe.html?${query}`;
+  return `http://localhost:${port}/iframe.html?${query}`;
 };
 // @ts-ignore
-const body = request('GET', 'http://localhost:6006/toc.json').getBody();
+const body = request('GET', `http://localhost:${port}/toc.json`).getBody();
 const scenarios = [...JSON.parse(body)].map(row => ({
   label: JSON.stringify(row),
   misMatchThreshold: 0.01,
diff --git a/package-lock.json b/package-lock.json
index 7040aa5..feaf1c0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1883,6 +1883,12 @@
       "integrity": "sha1-7ihweulOEdK4J7y+UnC86n8+ce4=",
       "dev": true
     },
+    "@types/minimist": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/@types/minimist/-/minimist-1.2.0.tgz",
+      "integrity": "sha1-aaI6OtKcrwCX8G7aWbNh7i8GOfY=",
+      "dev": true
+    },
     "@types/mkdirp": {
       "version": "0.3.29",
       "resolved": "https://registry.npmjs.org/@types/mkdirp/-/mkdirp-0.3.29.tgz",
diff --git a/package.json b/package.json
index 67bcebb..bd5096a 100644
--- a/package.json
+++ b/package.json
@@ -53,6 +53,7 @@
     "@types/enzyme-adapter-react-16": "^1.0.5",
     "@types/eslint": "^4.16.6",
     "@types/jest": "^24.0.9",
+    "@types/minimist": "^1.2.0",
     "@types/node-fetch": "^2.1.6",
     "@types/react": "^16.8.3",
     "@types/react-dom": "^16.8.2",
@@ -80,6 +81,7 @@
     "husky": "^1.3.1",
     "jest": "^24.1.0",
     "lint-staged": "^8.1.5",
+    "minimist": "^1.2.0",
     "node-fetch": "^2.3.0",
     "npm-run-all": "^4.1.5",
     "prettier": "^1.16.4",