diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8849d27b..2b6f85bf 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,7 +29,7 @@ jobs:
       - name: Build-test documentation
         env:
           RUSTDOCFLAGS: -Dwarnings
-        run: cargo doc --all --all-features --no-deps --document-private-items
+        run: cargo doc --workspace --all-features --features "rkyv/size_32" --no-deps --document-private-items
 
   test:
     name: Test