diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 9cae47337c..7e62015234 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -141,7 +141,7 @@ jobs:
 
       # Some of our rust modules use FFI and need those to be checked
       - name: Get postgres headers
-        run: make postgres-headers -j$(nproc)
+        run: CC=clang CARGO_BUILD_FLAGS="--features=testing" make postgres-headers -j$(nproc)
 
       # cargo hack runs the given cargo subcommand (clippy in this case) for all feature combinations.
       # This will catch compiler & clippy warnings in all feature combinations.