diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index a2e00e5..3db4fc0 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -15,6 +15,10 @@ jobs:
     steps:
     - uses: actions/checkout@v3
 
+    - name: dependencies
+      run: |
+        git submodule update --init --recursive
+
     - name: make clean
       run: |
         make clean