diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index bfbba0559..b69bfdd2b 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -26,6 +26,7 @@ jobs:
           - {compiler: gcc, version: 12}
           - {compiler: gcc, version: 13}
           - {compiler: gcc, version: 14}
+          - {compiler: gcc, version: 15}
           - {compiler: intel, version: '2024.1'}          
         build: [cmake]        
         include:
@@ -43,6 +44,8 @@ jobs:
             toolchain: {compiler: intel, version: '2024.1'}
           - os: macos-14
             toolchain: {compiler: gcc, version: 10}
+          - os: ubuntu-latest
+            toolchain: {compiler: gcc, version: 15}
     env:
       BUILD_DIR: ${{ matrix.build == 'cmake' && 'build' || '.' }}
 
diff --git a/README.md b/README.md
index 0e79c4d76..78e26c5c9 100644
--- a/README.md
+++ b/README.md
@@ -88,7 +88,7 @@ The following combinations are tested on the default branch of stdlib:
 Name | Version | Platform | Architecture
 --- | --- | --- | ---
 GCC Fortran | 10, 11, 12, 13, 14 | Ubuntu 24.04.3 LTS | x86_64
-GCC Fortran | 11, 12, 13, 14 | macOS 14.8.2 (23J126) | Arm64
+GCC Fortran | 11, 12, 13, 14, 15 | macOS 14.8.2 (23J126) | Arm64
 GCC Fortran (MSYS) | 13 | Windows Server 2022 (10.0.20348 Build 1547) | x86_64
 GCC Fortran (MinGW) | 13 | Windows Server 2022 (10.0.20348 Build 1547) | x86_64
 Intel oneAPI LLVM | 2024.1 | Ubuntu 24.04.3 LTS | x86_64