diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5150d6d..d4e8138 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -20,7 +20,7 @@ jobs:
             window_manager: 'kwin'
           - os:             'ubuntu-22.04'
             window_manager: 'fvwm'
-          - os:             'ubuntu-22.04'
+          - os:             'ubuntu-24.04'
             window_manager: 'twm'
 
     steps:
@@ -31,7 +31,7 @@ jobs:
         sudo rm -f /etc/apt/sources.list.d/*.list
         sudo apt-get update -qq
       if: "startsWith(matrix.os, 'ubuntu-')"
-    - uses: actions/checkout@v3
+    - uses: taiki-e/checkout-action@v1
     - name: Preinstall
       env:
         WINDOW_MANAGER: ${{ matrix.window_manager }}
@@ -68,9 +68,9 @@ jobs:
           - perlimage: 5.18.4-buster
           - perlimage: 5.22.4-stretch
           - perlimage: 5.36.0-bullseye
+          - perlimage: 5.40.0-bookworm
 
     steps:
-    - uses: actions/checkout@v3
     - name: apt hacks
       run: |
         set -e
@@ -82,6 +82,7 @@ jobs:
             echo "deb [check-valid-until=no] http://archive.debian.org/debian-security/ $CODENAME/updates main" >> /etc/apt/sources.list
             ;;
         esac
+    - uses: taiki-e/checkout-action@v1
     - name: "build and test"
       run: |
         apt-get update -qq && apt-get install -qq --no-install-recommends cpanminus xvfb libx11-dev libfreetype6-dev libxft-dev libpng-dev libz-dev libjpeg-dev twm