diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5baf33f..848acda 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -48,7 +48,7 @@ jobs:
           CCACHE_SLOPPINESS: time_macros
         shell: bash
         run: |
-          npx zx build.js ${{ matrix.arch }} --verbose
+          npx zx build.mjs ${{ matrix.arch }} --verbose
 
       - name: Test
         if: matrix.arch == runner.arch
diff --git a/build.js b/build.mjs
similarity index 100%
rename from build.js
rename to build.mjs