diff --git a/.github/workflows/JPN.yml b/.github/workflows/JPN.yml
index 70f034b..efaff81 100644
--- a/.github/workflows/JPN.yml
+++ b/.github/workflows/JPN.yml
@@ -18,7 +18,7 @@ on:
 jobs:
   buildjp:
     
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
 
     steps:
       - name: Checkout repository