diff --git a/gen-service-version.mjs b/gen-service-version.js
similarity index 92%
rename from gen-service-version.mjs
rename to gen-service-version.js
index 533de69..ed90e93 100644
--- a/gen-service-version.mjs
+++ b/gen-service-version.js
@@ -1,4 +1,4 @@
-import * as child_process from 'child_process';
+const child_process = require('child_process');
 
 const services = ['bar-service', 'foo-service'];