diff --git a/.github/workflows/buildAndTest.yml b/.github/workflows/buildAndTest.yml
index 87a20562e2d..3dded0272d4 100644
--- a/.github/workflows/buildAndTest.yml
+++ b/.github/workflows/buildAndTest.yml
@@ -8,7 +8,7 @@ jobs:
   # Build Phism and run its tests.
   build-phism:
     name: Build and Test Phism
-    runs-on: ubuntu-20.04
+    runs-on: self-hosted
     steps:
       # - name: Configure Environment
       #   run: echo "${GITHUB_WORKSPACE}/llvm/install/bin" >> $GITHUB_PATH