diff --git a/patch-version.js b/patch-version.js
new file mode 100644
index 000000000..afcd91280
--- /dev/null
+++ b/patch-version.js
@@ -0,0 +1,14 @@
+var fs = require('fs');
+var path = require('path');
+
+var file = './src/NetMQ/project.json';
+var version = process.env.APPVEYOR_REPO_TAG_NAME;
+
+var jsonText = fs.readFileSync(path.join(__dirname, file), {
+    encoding: 'utf8'
+});
+
+var project = JSON.parse(jsonText);
+project.version = version;
+jsonText = JSON.stringify(project);
+fs.writeFileSync(file, jsonText, {encoding:'utf8'})
\ No newline at end of file