diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 01cb8de53..f03dab4b2 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -52,7 +52,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        runner: [ubuntu-24.04, macos-14, macos-15-intel]
+        runner: [ubuntu-24.04, macos-15, macos-15-intel]
     runs-on: ${{ matrix.runner }}
     steps:
       - uses: actions/checkout@v7
@@ -72,7 +72,7 @@ jobs:
 
   macos_substrate:
     name: macOS arm64 (configure + substrate tests)
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
       - uses: actions/checkout@v7
         with:
diff --git a/.github/workflows/package.yml b/.github/workflows/package.yml
index b0913348c..914bc3182 100644
--- a/.github/workflows/package.yml
+++ b/.github/workflows/package.yml
@@ -99,7 +99,7 @@ jobs:
 
   macos-setup-package:
     name: macOS (universal Setup.pkg)
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
       - uses: actions/checkout@v7
         with: