diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 647ffeb..41bc627 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -26,9 +26,9 @@ jobs:
             lzip
 
       - name: Archive source code
-        shell: bash
         run: |
-          name="commitmsgfmt-${{ env.RELEASE_VERSION }}"
+          v="${{ env.RELEASE_VERSION }}"
+          name="commitmsgfmt-$v"
           git archive --prefix="${name}/" --format=tar "$v" |
             lzip -6 >"${name}.tar.lz"