diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index f8a50970..437e03d6 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -12,16 +12,19 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - name: Checkout repository
+    - name: Checkout repository(with submodules over SSH)
       uses: actions/checkout@v4
       with:
         submodules: recursive
+        fetch-depth: 1
+        ssh-key: ${{ secrets.ALICE_DEPLOY_KEY }}
         
     - name: Ensure submodules are initialized
       run: |
         git submodule sync --recursive
         git submodule update --init --recursive --depth 1
         git submodule status
+        git submodule foreach --recursive 'echo "== $name =="; git remote -v'
         
     - name: Configure with CMake (headless)
       run: cmake -S . -B build -DCMAKE_BUILD_TYPE=Release -DSD_BUILD_DESIGNER=OFF -DSD_BUILD_DEMOS=OFF
diff --git a/.gitmodules b/.gitmodules
index e1cd4ddf..2b52b7bc 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,6 @@
 [submodule "Alice"]
 	path = Alice
-	url = https://github.com/hananiahhsu/Alice.git
+	url = git@github.com:hananiahhsu/Alice.git
 	branch = main
 [submodule "ToolChain"]
 	url = https://github.com/ToshihideMaskawa/ToolChain.git