diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index d5fb7f3..f8afbed 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -11,7 +11,7 @@ on:
 jobs:
   analyze:
     name: Analyze (${{ matrix.language }})
-    runs-on: ${{ (matrix.language == 'swift' && 'macos-latest') || 'ubuntu-latest' }}
+    runs-on: ${{ (matrix.language == 'swift' && 'macos-26') || 'ubuntu-latest' }}
     permissions:
       security-events: write
       packages: read
diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 2ffe90a..01c9e72 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -7,7 +7,7 @@ on:
   
 jobs:
   build:
-    runs-on: macos-15
+    runs-on: macos-26
     permissions:
       id-token: write
       contents: write
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 66cf202..91ddbc7 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -8,7 +8,7 @@ jobs:
   test:
     permissions:
         contents: read
-    runs-on: macos-15
+    runs-on: macos-26
     timeout-minutes: 10
     steps:
     - uses: actions/checkout@v5
@@ -32,7 +32,7 @@ jobs:
       id-token: write
       contents: write
       attestations: write
-    runs-on: macos-15
+    runs-on: macos-26
     timeout-minutes: 10
     steps:
     - uses: actions/checkout@v5
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 0e2f077..d79f525 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -5,7 +5,7 @@ jobs:
   test:
     permissions:
         contents: read
-    runs-on: macos-15
+    runs-on: macos-26
     timeout-minutes: 10
     steps:
     - uses: actions/checkout@v5