diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d2a29b7..6d5d077 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -173,7 +173,7 @@ jobs:
 
     - name: Build
       working-directory: docs
-      run: sphinx-build source build
+      run: sphinx-build -W --keep-going source build
 
   build_meson:
     name: Meson / ${{ matrix.os }}