diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 76a609c6f..4380c3994 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -19,6 +19,7 @@ jobs:
       macos_versions: '["sequoia"]'
       enable_wasm_sdk_build: true
       wasm_sdk_versions: '["nightly-main"]'
+      enable_cross_pr_testing: true
 
   cmake_build:
     name: Build (CMake)