diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index e1d9fccf..314370cd 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -286,8 +286,7 @@ jobs:
       # Linux uses the default Ninja generator; install Ninja first.
       linux_pre_build_command: "apt-get install -y ninja-build"
       linux_configure_command: "$CMAKE -G Ninja -B build -S tests/CMakeProject"
-      # Windows uses CMake's default generator (MSVC), so Ninja is not required.
-      windows_configure_command: "Invoke-Program cmake -B build -S tests/CMakeProject"
+      windows_configure_command: "Invoke-Program cmake -G Ninja -B build -S tests/CMakeProject"
 
   soundness-docs:
     name: "Soundness - Docs (override_target_name: ${{ matrix.override_target_name }} ; post command: ${{ matrix.post_command }})"