diff --git a/.github/workflows/resolvconf.yml b/.github/workflows/resolvconf.yml
index 78843fd..f2b9c0f 100644
--- a/.github/workflows/resolvconf.yml
+++ b/.github/workflows/resolvconf.yml
@@ -6,7 +6,7 @@ on:
 jobs:
   Building:
     name: "Build on Ubuntu"
-    runs-on: ubuntu
+    runs-on: ubuntu-20.04
     steps:
     - uses: actions/checkout@v2