diff --git a/package.json b/package.json
index c80f6aae1..afb2a7f76 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "pi:uninstall-global": "node scripts/uninstall-pi-global.js",
     "sync-pkg-version": "node scripts/sync-pkg-version.cjs",
     "sync-platform-versions": "node native/scripts/sync-platform-versions.cjs",
-    "prepublishOnly": "npm run sync-pkg-version && npm run sync-platform-versions && npm run build"
+    "prepublishOnly": "npm run sync-pkg-version && npm run sync-platform-versions && git diff --exit-code || (echo 'ERROR: version sync changed files — commit them before publishing' && exit 1) && npm run build"
   },
   "dependencies": {
     "@clack/prompts": "^1.1.0",