diff --git a/.github/workflows/unittest.yml b/.github/workflows/unittest.yml
index 0449c02..f729c93 100644
--- a/.github/workflows/unittest.yml
+++ b/.github/workflows/unittest.yml
@@ -5,7 +5,7 @@ on:
 name: unittest
 jobs:
   unit:
-    runs-on: ubuntu-20.04
+    runs-on: 'ubuntu-24.04'
     strategy:
       matrix:
         python: ['3.6', '3.7', '3.8', '3.9', '3.10', '3.11', '3.12']