diff --git a/.dont-break.json b/.dont-break.json
new file mode 100644
index 0000000..79eb44b
--- /dev/null
+++ b/.dont-break.json
@@ -0,0 +1,4 @@
+[
+  "https://github.com/BrowserSync/browser-sync",
+  "https://github.com/gruntjs/grunt-contrib-connect"
+]
diff --git a/package.json b/package.json
index 4f3f607..74adc9f 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "portscanner",
   "description": "Asynchronous port scanner for Node.js",
   "scripts": {
-    "test": "ava",
+    "test": "ava && dont-break",
     "lint": "standard"
   },
   "keywords": [
@@ -36,6 +36,7 @@
   },
   "devDependencies": {
     "ava": "^0.4.2",
+    "dont-break": "^1.13.4",
     "eslint": "^3.10.2",
     "eslint-config-standard": "^6.2.1",
     "standard": "^8.5.0"