diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index a714020..6a561cc 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -6,6 +6,8 @@ jobs:
     steps:
     - name: Checkout
       uses: actions/checkout@v4
+      with:
+        submodules: recursive
     - name: Install Clang 17
       run: |
        wget https://apt.llvm.org/llvm.sh
diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 0df38cd..63dac5b 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -6,6 +6,8 @@ jobs:
     steps:
     - name: Checkout
       uses: actions/checkout@v4
+      with:
+        submodules: recursive
     - name: Configure
       run: cmake -S . -B build -DRPP_TEST=ON
     - name: Build