diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index 69d4418f0..f50092bea 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -15,7 +15,7 @@ env:
 
 jobs:
   coverage:
-    runs-on: ubuntu-latest
+    runs-on: self-hosted
     steps:
       - uses: actions/checkout@v3
       - name: Read rust-toolchain file
@@ -24,18 +24,21 @@ jobs:
       - uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ steps.rust-toolchain.outputs.toolchain }}
-      - uses: Swatinem/rust-cache@v2
       - run: rustup component add llvm-tools-preview
-      - name: Redis in GitHub Actions
-        uses: supercharge/redis-github-action@1.7.0
-        with:
-          redis-version: 6
       - name: Install grcov
         uses: actions-rs/install@v0.1
         with:
           crate: grcov
           version: latest
           use-tool-cache: true
+      - name: clean
+        run: |
+          cargo clean
+          rm -rf ./target/debug/deps/gluesql*
+          rm *.profraw && rm **/*.profraw
+          cd storages/csv-storage && rm -rf ./tmp && cd ../..
+          cd storages/json-storage && rm -rf ./tmp && cd ../..
+          redis-cli flushall
       - name: build
         env:
           RUSTFLAGS: -Cinstrument-coverage