diff --git a/.github/workflows/pages.yml b/.github/workflows/pages.yml
index 8ef929e..f45975b 100644
--- a/.github/workflows/pages.yml
+++ b/.github/workflows/pages.yml
@@ -11,7 +11,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - name: Checkout sources
+      uses: actions/checkout@v3
+      with:
+        submodules: recursive
     - name: Build documentation
       run: cargo doc --verbose
     - name: Deploy documentation