diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 789b3bd..94cca09 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -50,14 +50,14 @@ jobs:
       - uses: k1LoW/octocov-action@5213913fe329368ab9dafa16f18f4f3cce1062f0 # v1.3.0
       - name: create filename
         id: filename
-        run: echo "filename=badge-${{ runner.os }}-$(test \"${{ matrix.neovim }}\" = \"true\" && echo neovim || echo vim )-${{ matrix.version }}.svg" >> "$GITHUB_OUTPUT"
+        run: echo "filename=badge-${{ runner.os }}-$(test \"${{ matrix.neovim }}\" = \"true\" && echo neovim || echo vim )-${{ matrix.version }}" >> "$GITHUB_OUTPUT"
       - name: make covarage badge
         run: |
-          octocov badge coverage --out ${{ github.workspace }}/${{ steps.filename.outputs.filename }}
+          octocov badge coverage --out ${{ github.workspace }}/${{ steps.filename.outputs.filename }}.svg
       - name: upload badge to artifact
         uses: actions/upload-artifact@65462800fd760344b1a7b4382951275a0abb4808 # v4.3.3
         with:
-          path: ${{ steps.filename.outputs.filename }}
+          path: ${{ steps.filename.outputs.filename }}.svg
           name: ${{ steps.filename.outputs.filename }}
           if-no-files-found: error