diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a39ff03..6fca230 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -60,6 +60,7 @@ jobs:
         with:
           name: ${{ needs.generate-version.outputs.trunkver }}
           tag_name: ${{ needs.generate-version.outputs.trunkver }}
+          prerelease: true
           files: |
             out/trunkver*