diff --git a/.github/workflows/Build-Rock.yaml b/.github/workflows/Build-Rock.yaml
index 31dc1ef8..4a24bb13 100644
--- a/.github/workflows/Build-Rock.yaml
+++ b/.github/workflows/Build-Rock.yaml
@@ -100,7 +100,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix: ${{ fromJSON(needs.configure-build.outputs.runner-build-matrix) }}
-    runs-on: ${{ matrix.runner }}
+    runs-on: ${{ github.event_name == 'pull_request' && 'ubuntu-22.04' || matrix.runner }}
     name: "runner-build | ${{ matrix.architecture }} ${{ inputs.build-id != '' && format('| {0}', inputs.build-id) || ' '}}"
     steps:
 
diff --git a/oci/mock-rock/image.yaml b/oci/mock-rock/image.yaml
index 23727130..76b5dafb 100644
--- a/oci/mock-rock/image.yaml
+++ b/oci/mock-rock/image.yaml
@@ -25,6 +25,7 @@ upload:
       1.0-22.04:
         end-of-life: "2024-05-01T00:00:00Z"
         risks:
+          - stable
           - candidate
           - edge
           - beta