diff --git a/.github/workflows/tagged-release.yml b/.github/workflows/tagged-release.yml
index 4abd786..f2d7f20 100644
--- a/.github/workflows/tagged-release.yml
+++ b/.github/workflows/tagged-release.yml
@@ -34,7 +34,7 @@ jobs:
 
       - name: set date env var (Windows)
         if: ${{ matrix.platform == 'windows-latest' }}
-        run: $NOW=& Get-Date -format yyyy-MM-dd; echo "NOW=$NOW" >> $env:GITHUB_ENV
+        run: $NOW=& Get-Date -format yyyy.MM.dd; echo "NOW=$NOW" >> $env:GITHUB_ENV
 
       - name: Upload release assets
         uses: softprops/action-gh-release@v2