diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 5534e6e..e7fbcc2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -50,7 +50,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       fail-fast: false
-      max-parallel: 6
+      max-parallel: 4
 # manylinux2014-aarch64 cc65 pvsneslib
       matrix:
         arch_name: [android-arm, android-arm64, android-x86, android-x86_64, web-wasm, linux-armv8, linux-armv8-musl, linux-armv8-rpi3, linux-armv8-rpi4, linux-armv5, linux-armv5-musl, linux-armv6-rpi1, linux-armv7-rpi2, linux-armv6-musl, linux-armv6-rpi-old, linux-armv7, linux-armv7a, linux-armv7l-musl, linux-mips, linux-mips64, linux-mips64el-n64, linux-mipsel, linux-m68k, linux-ppc32, linux-ppc64, linux-s390x, linux-x64, linux-x64-clang, linux-x86, linux-riscv64, manylinux2014-x64, manylinux2014-x86, windows-static-x64, windows-static-x64-posix, windows-static-x86, windows-shared-x64, windows-shared-x64-posix, windows-shared-x86]
@@ -85,7 +85,11 @@ jobs:
       matrix:
         arch_name: [linux-armv8-rpi4.full, linux-armv8-rpi3.full, linux-armv7-rpi2.full, linux-armv7.full, linux-armv7a.full, linux-armv6-rpi1.full, linux-armv8.full]
     steps:
-      - uses: actions/checkout@v2
+      - name: "checkout code"
+        uses: actions/checkout@v2.2.0
+        with:
+          submodules: 'recursive'
+          fetch-depth: 0
       - uses: actions/download-artifact@v2
         with:
           name: cache
@@ -105,4 +109,22 @@ jobs:
             docker login -u ${{ secrets.DOCKER_USER }} -p ${{ secrets.DOCKER_PASS }}
             docker image push bensuperpc/${{ matrix.arch_name }}
       - name: clean
-        run: docker image rm -f bensuperpc/${{ matrix.arch_name }}
\ No newline at end of file
+        run: docker image rm -f bensuperpc/${{ matrix.arch_name }}
+  image_spec:
+    name: ${{ matrix.arch_name }}
+    if: always()
+    needs: image_full
+    runs-on: ubuntu-20.04
+    strategy:
+      fail-fast: false
+      max-parallel: 8
+      matrix:
+        arch_name: [cc65, pvsneslib, psn00bsdk, sgdk]
+    steps:
+      - name: "checkout code"
+        uses: actions/checkout@v2.2.0
+        with:
+          submodules: 'recursive'
+          fetch-depth: 0
+      - name: build
+        run: make ${{ matrix.arch_name }}
\ No newline at end of file