diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 420302f..c9c39d1 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -174,7 +174,7 @@ jobs:
             //   + '\n\n' + 'https://github.com/python/mypy/commit/${{ needs.generate_wheels_matrix.outputs.mypy_sha }}'
             // );
 
-            const tagName = "1.12.0a5";
+            const tagName = "1.12.0a5-missing";
             const response = await github.rest.repos.getReleaseByTag({
               owner, repo,
               tag: tagName,