diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0064eb7f..e1f66db2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -3,7 +3,7 @@ on:
   pull_request:
 jobs:
   ci:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       fail-fast: false
     steps:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index dedcc182..acfb634b 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -6,7 +6,7 @@ on:
     types: [ published ]
 jobs:
   release:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v4
         with: