diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 27e1e08..2c9fe35 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ concurrency:
 jobs:
   build-test:
     name: build + test
-    runs-on: macos-15
+    runs-on: macos-26
     steps:
       - name: Check out
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
@@ -38,7 +38,7 @@ jobs:
 
   lint:
     name: lint
-    runs-on: macos-15
+    runs-on: macos-26
     steps:
       - name: Check out
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
@@ -49,7 +49,7 @@ jobs:
 
   bundle-smoke:
     name: bundle smoke
-    runs-on: macos-15
+    runs-on: macos-26
     needs: build-test
     steps:
       - name: Check out
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 49c7507..bca8702 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -24,7 +24,7 @@ concurrency:
 jobs:
   release:
     name: build + publish
-    runs-on: macos-15
+    runs-on: macos-26
     steps:
       - name: Check out
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6