diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 785a64e..bd6d2da 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -51,7 +51,7 @@ jobs:
         run: sudo chown -R $(whoami) /usr/share/nsis/Plugins/
 
       - name: Set version
-        run: sed -i "s/VERSION_PLACEHOLDER/${${GITHUB_REF%-*}:11}.0/g" "scripts/windows/install.nsi"
+        run: sed -i "s/VERSION_PLACEHOLDER/$(echo $GITHUB_REF | cut -d'-' -f1 | cut -c12-).0/g" "scripts/windows/install.nsi"
 
       - name: Create nsis installer
         uses: joncloud/makensis-action@v3.3