diff --git a/.github/workflows/test-build.yml b/.github/workflows/test-build.yml
index c73aa9953..e13b96816 100644
--- a/.github/workflows/test-build.yml
+++ b/.github/workflows/test-build.yml
@@ -31,6 +31,8 @@ jobs:
     steps:
       - name: Checkout Yosys
         uses: actions/checkout@v4
+        with:
+          submodules: true
 
       - name: Setup environment
         uses: ./.github/actions/setup-build-env
diff --git a/.github/workflows/test-compile.yml b/.github/workflows/test-compile.yml
index 6a9097ad3..375ea7fc5 100644
--- a/.github/workflows/test-compile.yml
+++ b/.github/workflows/test-compile.yml
@@ -46,6 +46,8 @@ jobs:
     steps:
       - name: Checkout Yosys
         uses: actions/checkout@v4
+        with:
+          submodules: true
 
       - name: Setup environment
         uses: ./.github/actions/setup-build-env