diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1b712ac..a23b14f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,8 @@ jobs:
       matrix:
         os:
           # - ubuntu-latest
-          - ubuntu-24.04
+          # - ubuntu-24.04
+          - ubuntu-22.04
           # - windows-latest
           # - windows-2019
           # Either the waiting queue for FreeBSD is very long, or it is not available.