diff --git a/.github/workflows/build-n-verify.yml b/.github/workflows/build-n-verify.yml
index c4d306a4..0779e4ba 100644
--- a/.github/workflows/build-n-verify.yml
+++ b/.github/workflows/build-n-verify.yml
@@ -22,7 +22,7 @@ jobs:
       fail-fast: false
       matrix:
         # https://docs.github.com/en/actions/using-jobs/choosing-the-runner-for-a-job
-        os: [ ubuntu-22.04, windows-2022, macos-12 ]
+        os: [ ubuntu-24.04, windows-2022, macos-15 ]
         jvm: [ 11, 17, 21 ]
 
     # https://github.com/actions
diff --git a/.github/workflows/jmh.yml b/.github/workflows/jmh.yml
index af842958..fc5084eb 100644
--- a/.github/workflows/jmh.yml
+++ b/.github/workflows/jmh.yml
@@ -21,7 +21,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ ubuntu-22.04 ]
+        os: [ ubuntu-24.04 ]
         jvm: [ 11, 17, 21 ]
 
     steps: