diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5963b6b..2925f54 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -36,7 +36,7 @@ jobs:
           echo "GOCACHE=$(go env GOCACHE)" >> $GITHUB_ENV
           echo "CCACHE_DIR=$(pwd)/ccache" >> $GITHUB_ENV
           echo "UROOT_COMMIT=$(git rev-parse HEAD:u-root)" >> $GITHUB_ENV
-          echo "KERNEL_COMMIT=$(git rev-parse HEAD:kernel)" >> $GITHUB_ENV
+          echo "KERNEL_COMMIT=$(git rev-parse HEAD:${{ matrix.platform == 'x86_64' && 'kernel-lts' || 'kernel-mainline' }})" >> $GITHUB_ENV
 
       - name: Setup Go cache
         uses: actions/cache@v3
@@ -50,7 +50,7 @@ jobs:
         uses: actions/cache@v3
         with:
           path: ${{ env.CCACHE_DIR }}
-          key: ccache-${{ matrix.platform }}-${{ env.KERNEL_COMMIT }}-${{ hashFiles('kernel.config') }}
+          key: ccache-${{ matrix.platform }}-${{ env.KERNEL_COMMIT }}-${{ matrix.platform == 'x86_64' && hashFiles('configs/kernel.x86') || hashFiles('configs/kernel.mt8183') }}
           restore-keys: |
             ccache-${{ matrix.platform }}-${{ env.KERNEL_COMMIT }}-
             ccache-${{ matrix.platform }}-