diff --git a/dictionary/opn.js b/dictionary/opn.js
new file mode 100644
index 000000000..99b4a61dc
--- /dev/null
+++ b/dictionary/opn.js
@@ -0,0 +1,15 @@
+'use strict';
+
+module.exports = {
+  pkg: {
+    patches: {
+      'index.js': [
+        'path.join(__dirname, \'xdg-open\')',
+        'path.join(path.dirname(process.execPath), \'xdg-open\')'
+      ]
+    },
+    deployFiles: [
+      [ 'xdg-open', 'xdg-open' ]
+    ]
+  }
+};
diff --git a/test/test-79-npm/opn/opn.js b/test/test-79-npm/opn/opn.js
new file mode 100644
index 000000000..bf3d938ad
--- /dev/null
+++ b/test/test-79-npm/opn/opn.js
@@ -0,0 +1,6 @@
+'use strict';
+
+var opn = require('opn');
+opn('https://github.com/zeit/pkg').then(() => {
+  console.log('ok');
+});
diff --git a/test/test-79-npm/opn/opn.meta.js b/test/test-79-npm/opn/opn.meta.js
new file mode 100644
index 000000000..2b63864cd
--- /dev/null
+++ b/test/test-79-npm/opn/opn.meta.js
@@ -0,0 +1,7 @@
+'use strict';
+
+module.exports = function () {
+  return {
+    deployFilesFrom: [ 'opn' ]
+  };
+};
diff --git a/test/test-79-npm/opn/package.json b/test/test-79-npm/opn/package.json
new file mode 100644
index 000000000..101d327bd
--- /dev/null
+++ b/test/test-79-npm/opn/package.json
@@ -0,0 +1 @@
+{ "private": true }