diff --git a/.github/workflows/openpilot.yaml b/.github/workflows/openpilot.yaml
index 358ee6eb1..615816409 100644
--- a/.github/workflows/openpilot.yaml
+++ b/.github/workflows/openpilot.yaml
@@ -11,7 +11,13 @@ env:
 jobs:
   build_ubuntu:
     name: build ubuntu
-    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        arch: ${{ fromJson(
+           ((github.repository == 'commaai/plotjuggler') &&
+              ((github.event_name != 'pull_request') || 
+               (github.event.pull_request.head.repo.full_name == 'commaai/plotjuggler'))) && '["x86_64", "aarch64"]' || '["x86_64"]' ) }}    
+    runs-on: ${{ (matrix.arch == 'aarch64') && 'buildjet-2vcpu-ubuntu-2204-arm' || 'ubuntu-20.04' }}
     steps:
     - uses: actions/checkout@v2
       with: