diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 4f7600b..bd93afc 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -104,7 +104,7 @@ jobs:
     name: Build PowerPC Binaries
     if: github.event_name != 'pull_request' && (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v'))
     continue-on-error: true
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     needs: [check, test, lints]
     steps:
       - uses: actions/checkout@v2
@@ -134,7 +134,7 @@ jobs:
   publish-docker:
     name: Build and Publish Docker Image
     if: github.event_name != 'pull_request' && (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/v'))
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     needs: [check, test, lints]
     steps:
       - uses: actions/checkout@v2