diff --git a/.github/workflows/c-cpp.yml b/.github/workflows/c-cpp.yml
index 1a00e21..192de54 100644
--- a/.github/workflows/c-cpp.yml
+++ b/.github/workflows/c-cpp.yml
@@ -17,6 +17,7 @@ jobs:
     - uses: actions/checkout@v3
       with:
         repository: tianocore/edk2
+        ref: 'edk2-stable202205'
         submodules : true
         path: edk2
     - uses: actions/checkout@v3