diff --git a/.github/workflows/cibuild.yml b/.github/workflows/cibuild.yml
index 530e9b2ead..9936220665 100644
--- a/.github/workflows/cibuild.yml
+++ b/.github/workflows/cibuild.yml
@@ -46,7 +46,7 @@ jobs:
         - 'ubuntu-latest'
         java:
         - '20'
-        - '24'
+        - '23'
         runner:
         - '{0}' # 'xvfb-run --auto-servernum {0}'
         include:
diff --git a/.github/workflows/rebuild.yml b/.github/workflows/rebuild.yml
index 3296b8baa0..6a4594ce75 100644
--- a/.github/workflows/rebuild.yml
+++ b/.github/workflows/rebuild.yml
@@ -89,7 +89,7 @@ jobs:
         java:
         - '17'
         - '20'
-        - '24'
+        - '23'
         runner:
         - '{0}' # 'xvfb-run --auto-servernum {0}'
     name: Rebuild JDK${{ matrix.java }} ${{ matrix.os }}