diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ab9b4fc5f..1b0ca157a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1055,7 +1055,7 @@ jobs:
 
   bazel_osx:
     name: Bazel on MacOS
-    runs-on: macos-15
+    runs-on: macos-26
     steps:
     - name: Harden the runner (Audit all outbound calls)
       uses: step-security/harden-runner@e14015d583714f6e62063499dc959a02595150a1 # v2.21.1
diff --git a/.github/workflows/cmake_install.yml b/.github/workflows/cmake_install.yml
index d2b799c3b..69d7ee062 100644
--- a/.github/workflows/cmake_install.yml
+++ b/.github/workflows/cmake_install.yml
@@ -285,7 +285,7 @@ jobs:
 
   macos_14_conan_stable:
     name: macOS 14 conan stable versions cxx17 (static libs)
-    runs-on: macos-14
+    runs-on: macos-26
     env:
       INSTALL_TEST_DIR: '/Users/runner/install_test'
       CXX_STANDARD: '17'
@@ -322,7 +322,7 @@ jobs:
 
   macos_14_brew_packages:
     name: macOS 14 brew latest versions cxx17 (static libs)
-    runs-on: macos-14
+    runs-on: macos-26
     env:
       INSTALL_TEST_DIR: '/Users/runner/install_test'
       CXX_STANDARD: '17'