diff --git a/.github/workflows/cpp-ci-serial-programs-ubuntu-clang.yml b/.github/workflows/cpp-ci-serial-programs-ubuntu-clang.yml
index 59ceed9de3..7bb9683efc 100644
--- a/.github/workflows/cpp-ci-serial-programs-ubuntu-clang.yml
+++ b/.github/workflows/cpp-ci-serial-programs-ubuntu-clang.yml
@@ -5,6 +5,6 @@ jobs:
   build:
     uses: ./.github/workflows/cpp-ci-serial-programs-base.yml
     with:
-      os: ubuntu-24.04
+      os: ubuntu-26.04
       compiler: clang
       run-clang-query: true
\ No newline at end of file
diff --git a/.github/workflows/cpp-ci-serial-programs-ubuntu-default.yml b/.github/workflows/cpp-ci-serial-programs-ubuntu-default.yml
index 5c4a9b2fcb..ff0357a448 100644
--- a/.github/workflows/cpp-ci-serial-programs-ubuntu-default.yml
+++ b/.github/workflows/cpp-ci-serial-programs-ubuntu-default.yml
@@ -5,6 +5,6 @@ jobs:
   build:
     uses: ./.github/workflows/cpp-ci-serial-programs-base.yml
     with:
-      os: ubuntu-24.04
+      os: ubuntu-26.04
       compiler: default
       run-clang-query: true
\ No newline at end of file