diff --git a/.github/workflows/build-as-subproject.yml b/.github/workflows/build-as-subproject.yml
index 144626ce..e158c8a7 100644
--- a/.github/workflows/build-as-subproject.yml
+++ b/.github/workflows/build-as-subproject.yml
@@ -13,7 +13,7 @@ permissions:
   contents: read
 
 env:
-  GCC_VERSION: "13"
+  GCC_VERSION: "14"
   COMMON_CMAKE_FLAGS: >
     -DSLEEF_SHOW_CONFIG=ON
     -DSLEEF_BUILD_GNUABI_LIBS=ON
diff --git a/.github/workflows/build-examples.yml b/.github/workflows/build-examples.yml
index 22e68611..475a42d7 100644
--- a/.github/workflows/build-examples.yml
+++ b/.github/workflows/build-examples.yml
@@ -13,7 +13,7 @@ permissions:
   contents: read
 
 env:
-  GCC_VERSION: "13"
+  GCC_VERSION: "14"
   COMMON_CMAKE_FLAGS: >
     -DSLEEF_SHOW_CONFIG=ON
     -DSLEEF_BUILD_GNUABI_LIBS=ON
diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index e63bbf64..203bfe1b 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -13,7 +13,7 @@ permissions:
   contents: read
 
 env:
-  GCC_VERSION: "13"
+  GCC_VERSION: "14"
   LLVM_VERSION: "17"
   COMMON_CMAKE_FLAGS: >
     -DSLEEF_SHOW_CONFIG=1
diff --git a/README.md b/README.md
index 5d3c5d03..a7ba0c04 100644
--- a/README.md
+++ b/README.md
@@ -105,7 +105,7 @@ LTO is not tested in CI yet, except on Windows.
 
 ### Compiler support
 
-Results are displayed for gcc 13 and llvm 17, the compiler versions used in CI tests with GitHub Actions.
+Results are displayed for gcc 14 and llvm 17, the compiler versions used in CI tests with GitHub Actions.
 
 Older versions should be supported too, while newer ones are either not tested or have known issues.
 
@@ -122,7 +122,7 @@ Only Linux distributions and macOS are fully tested in CI and thus officially su
 Only AArch64 and x86_64 vector extensions are built and tested natively on Linux and macOS.
 Other architectures/vector extensions are cross-compiled on Linux.
 
-Native AArch64 tests on Linux are using gcc 11 (default in Ubuntu 22.04), while native x86_64 and cross-compiled tests use gcc 13.
+Native AArch64 tests on Linux are using gcc 11 (default in Ubuntu 22.04), while native x86_64 and cross-compiled tests use gcc 14.
 
 Building SLEEF for Windows on x86 machines was officially supported ( :white_circle: ), as of 3.5.1,
 however it is only partially tested due to [known limitations of the test suite with MinGW or MSYS2](https://github.com/shibatch/sleef/issues/544).
diff --git a/toolchains/aarch64-gcc.cmake b/toolchains/aarch64-gcc.cmake
index d6a66511..e3b12ea8 100644
--- a/toolchains/aarch64-gcc.cmake
+++ b/toolchains/aarch64-gcc.cmake
@@ -5,7 +5,8 @@ SET (CMAKE_SYSTEM_PROCESSOR "aarch64")
 SET(CMAKE_FIND_ROOT_PATH  /usr/aarch64-linux-gnu /usr/include/aarch64-linux-gnu /usr/lib/aarch64-linux-gnu /lib/aarch64-linux-gnu)
 
 find_program(CMAKE_C_COMPILER
-             NAMES aarch64-linux-gnu-gcc-13
+             NAMES aarch64-linux-gnu-gcc-14
+                   aarch64-linux-gnu-gcc-13
                    aarch64-linux-gnu-gcc-12
                    aarch64-linux-gnu-gcc-11
                    aarch64-linux-gnu-gcc-10
diff --git a/toolchains/armhf-gcc.cmake b/toolchains/armhf-gcc.cmake
index 17895d54..f0d91e62 100644
--- a/toolchains/armhf-gcc.cmake
+++ b/toolchains/armhf-gcc.cmake
@@ -5,7 +5,8 @@ SET (CMAKE_SYSTEM_PROCESSOR "armhf")
 SET(CMAKE_FIND_ROOT_PATH  /usr/arm-linux-gnueabihf /usr/include/arm-linux-gnueabihf /usr/lib/arm-linux-gnueabihf)
 
 find_program(CMAKE_C_COMPILER
-             NAMES arm-linux-gnueabihf-gcc-13
+             NAMES arm-linux-gnueabihf-gcc-14
+                   arm-linux-gnueabihf-gcc-13
                    arm-linux-gnueabihf-gcc-12
                    arm-linux-gnueabihf-gcc-11
                    arm-linux-gnueabihf-gcc-10
diff --git a/toolchains/native-gcc.cmake b/toolchains/native-gcc.cmake
index 6249ad91..83fa1fcc 100644
--- a/toolchains/native-gcc.cmake
+++ b/toolchains/native-gcc.cmake
@@ -1,5 +1,6 @@
 find_program(CMAKE_C_COMPILER
-             NAMES gcc-13
+             NAMES gcc-14
+                   gcc-13
                    gcc-12
                    gcc-11
                    gcc-10
diff --git a/toolchains/ppc64el-gcc.cmake b/toolchains/ppc64el-gcc.cmake
index 467f52bd..ed5e0fcc 100644
--- a/toolchains/ppc64el-gcc.cmake
+++ b/toolchains/ppc64el-gcc.cmake
@@ -5,7 +5,8 @@ SET (CMAKE_SYSTEM_PROCESSOR "ppc64")
 SET(CMAKE_FIND_ROOT_PATH  /usr/powerpc64le-linux-gnu /usr/include/powerpc64le-linux-gnu /usr/lib/powerpc64le-linux-gnu)
 
 find_program(CMAKE_C_COMPILER
-             NAMES powerpc64le-linux-gnu-gcc-13
+             NAMES powerpc64le-linux-gnu-gcc-14
+                   powerpc64le-linux-gnu-gcc-13
                    powerpc64le-linux-gnu-gcc-12
                    powerpc64le-linux-gnu-gcc-11
                    powerpc64le-linux-gnu-gcc-10
diff --git a/toolchains/s390x-gcc.cmake b/toolchains/s390x-gcc.cmake
index 2bffd2c2..bb4bc4d2 100644
--- a/toolchains/s390x-gcc.cmake
+++ b/toolchains/s390x-gcc.cmake
@@ -5,7 +5,8 @@ SET (CMAKE_SYSTEM_PROCESSOR "s390x")
 SET(CMAKE_FIND_ROOT_PATH  /usr/s390x-linux-gnu /usr/include/s390x-linux-gnu /usr/lib/s390x-linux-gnu)
 
 find_program(CMAKE_C_COMPILER
-             NAMES s390x-linux-gnu-gcc-13
+             NAMES s390x-linux-gnu-gcc-14
+                   s390x-linux-gnu-gcc-13
                    s390x-linux-gnu-gcc-12
                    s390x-linux-gnu-gcc-11
                    s390x-linux-gnu-gcc-10