diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
index 4e5e716..c5d3b79 100644
--- a/.github/workflows/cd.yml
+++ b/.github/workflows/cd.yml
@@ -14,7 +14,7 @@ jobs:
   linux-ubuntu:
     timeout-minutes: 10
 
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-18.04
 
     steps:
     - uses: actions/checkout@v4