diff --git a/.github/workflows/conda.yml b/.github/workflows/conda.yml
index b924e7b9..425f5d22 100644
--- a/.github/workflows/conda.yml
+++ b/.github/workflows/conda.yml
@@ -15,7 +15,7 @@ jobs:
       matrix:
         os:
           - ubuntu-latest
-          - macos-latest
+          - macos-26-intel
           - windows-latest
         architecture: [x64]
         julia-version: ['1']
diff --git a/.github/workflows/system.yml b/.github/workflows/system.yml
index 0eabf7eb..57f54acb 100644
--- a/.github/workflows/system.yml
+++ b/.github/workflows/system.yml
@@ -30,11 +30,11 @@ jobs:
             architecture: arm64
             python-version: '3.x'
             julia-version: 'nightly'
-          - os: macos-15-intel
+          - os: macos-26-intel
             architecture: x64
             python-version: '3.x'
             julia-version: '1'
-          - os: macos-15-intel
+          - os: macos-26-intel
             architecture: x64
             python-version: '3.x'
             julia-version: 'nightly'