diff --git a/.github/action/setup-ccache/action.yml b/.github/action/setup-ccache/action.yml
index 09a7ba6..a09fcf6 100644
--- a/.github/action/setup-ccache/action.yml
+++ b/.github/action/setup-ccache/action.yml
@@ -50,7 +50,11 @@ runs:
         echo "CMAKE_GENERATOR=Ninja" >> $GITHUB_ENV
         echo "CMAKE_C_COMPILER_LAUNCHER=ccache" >> $GITHUB_ENV
         echo "CMAKE_CXX_COMPILER_LAUNCHER=ccache" >> $GITHUB_ENV
-
+    - if: runner.os == 'Windows'
+      shell: bash
+      run: |
+        echo "CCACHE_SLOPPINESS=include_file_mtime,include_file_ctime,time_macros,pch_defines,file_stat_matches" >> $env:GITHUB_ENV
+        echo "CCACHE_BASEDIR=$(pwd)" >> $env:GITHUB_ENV
     - shell: bash
       run: |
         set -e
diff --git a/.github/workflows/ci-test.yml b/.github/workflows/ci-test.yml
index 37b6738..1b83f0d 100644
--- a/.github/workflows/ci-test.yml
+++ b/.github/workflows/ci-test.yml
@@ -82,10 +82,12 @@ jobs:
             ccache-${{ runner.os }}-build-
 
       - run: npm run build
+        shell: bash
 
       - name: run test for windows
-        run: |
-          npm run test:as
+        shell: bash
+        run: npm run test:as
 
       - name: verify ccache stats
         run: ccache --show-stats
+        shell: bash