diff --git a/.github/workflows/head-builds.yaml b/.github/workflows/head-builds.yaml
index 6dda619e..62e089f6 100644
--- a/.github/workflows/head-builds.yaml
+++ b/.github/workflows/head-builds.yaml
@@ -20,7 +20,7 @@ permissions:
 jobs:
   prebuild-env:
     name: Prebuild needed Env vars
-    runs-on: ubuntu-latest
+    runs-on : runs-on,image=ubuntu22-full-x64,runner=4cpu-linux-x64,run-id=${{ github.run_id }}
     steps:
       - name: Check out the repository to the runner
         uses: actions/checkout@v4
@@ -39,7 +39,7 @@ jobs:
       contents : read
       id-token: write
     name : Build and push BRO images
-    runs-on : runs-on,image=ubuntu22-full-${{ matrix.arch }},runner=4cpu-linux-${{ matrix.arch }},run-id=${{ github.run_id }}
+    runs-on : runs-on,image=ubuntu22-full-x64,runner=4cpu-linux-x64,run-id=${{ github.run_id }}
     steps:
       - name : "Read vault secrets"
         uses : rancher-eio/read-vault-secrets@main
diff --git a/.github/workflows/publish.yaml b/.github/workflows/publish.yaml
index f31c91fe..c6124815 100644
--- a/.github/workflows/publish.yaml
+++ b/.github/workflows/publish.yaml
@@ -49,7 +49,7 @@ jobs:
       contents : read
       id-token: write
     name : Build and push BRO images
-    runs-on : runs-on,image=ubuntu22-full-${{ matrix.arch }},runner=4cpu-linux-${{ matrix.arch }},run-id=${{ github.run_id }}
+    runs-on : runs-on,image=ubuntu22-full-x64,runner=4cpu-linux-x64,run-id=${{ github.run_id }}
     steps:
       - name : "Read vault secrets"
         uses : rancher-eio/read-vault-secrets@main