diff --git a/.github/workflows/clang-c++20.yml b/.github/workflows/clang-c++20.yml
index d1e640a6..d170a982 100644
--- a/.github/workflows/clang-c++20.yml
+++ b/.github/workflows/clang-c++20.yml
@@ -100,7 +100,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-13]
+        os: [macos-15]
 
     steps:
     - uses: actions/checkout@v4
@@ -122,7 +122,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-13]
+        os: [macos-15]
 
     steps:
     - uses: actions/checkout@v4
@@ -144,7 +144,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-13]
+        os: [macos-15]
 
     steps:
     - uses: actions/checkout@v4
@@ -166,7 +166,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-13]
+        os: [macos-15]
 
     steps:
     - uses: actions/checkout@v4
diff --git a/.github/workflows/clang-c++23.yml b/.github/workflows/clang-c++23.yml
index 82c4a16d..b6b6cd84 100644
--- a/.github/workflows/clang-c++23.yml
+++ b/.github/workflows/clang-c++23.yml
@@ -99,7 +99,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-13]
+        os: [macos-15]
 
     steps:
     - uses: actions/checkout@v4
@@ -121,7 +121,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-13]
+        os: [macos-15]
 
     steps:
     - uses: actions/checkout@v4
@@ -143,7 +143,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-13]
+        os: [macos-15]
 
     steps:
     - uses: actions/checkout@v4
@@ -165,7 +165,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [macos-13]
+        os: [macos-15]
 
     steps:
     - uses: actions/checkout@v4