diff --git a/.github/workflows/wide_integer.yml b/.github/workflows/wide_integer.yml
index 4b90f57..7e6add9 100644
--- a/.github/workflows/wide_integer.yml
+++ b/.github/workflows/wide_integer.yml
@@ -589,8 +589,8 @@ jobs:
           sudo apt update
           sudo apt install libncurses5-dev
           mkdir -p emu_env && cd emu_env
-          wget --no-check-certificate https://developer.arm.com/-/media/Files/downloads/gnu/14.3.rel1/binrel/arm-gnu-toolchain-14.3.rel1-x86_64-arm-none-eabi.tar.xz
-          tar -xf arm-gnu-toolchain-14.3.rel1-x86_64-arm-none-eabi.tar.xz
+          wget --no-check-certificate https://gitlab.arm.com/api/v4/projects/tooling%2Fgnu-toolchains-for-arm/packages/generic/gnu-toolchain/15.3.rel1/arm-gnu-toolchain-15.3.rel1-x86_64-arm-none-eabi.tar.xz
+          tar -xf arm-gnu-toolchain-15.3.rel1-x86_64-arm-none-eabi.tar.xz
           wget --no-check-certificate https://github.com/xpack-dev-tools/qemu-arm-xpack/releases/download/v8.2.6-1/xpack-qemu-arm-8.2.6-1-linux-x64.tar.gz
           tar -xzf xpack-qemu-arm-8.2.6-1-linux-x64.tar.gz
         working-directory: ./
@@ -600,7 +600,7 @@ jobs:
           string: ${{ matrix.example }}
       - name: build-example-stm32f429
         run: |
-          PATH="${{ runner.workspace }}/wide-integer/emu_env/arm-gnu-toolchain-14.3.rel1-x86_64-arm-none-eabi/bin:$PATH"
+          PATH="${{ runner.workspace }}/wide-integer/emu_env/arm-gnu-toolchain-15.3.rel1-x86_64-arm-none-eabi/bin:$PATH"
           echo 'Query arm-none-eabi-g++ version'
           echo
           arm-none-eabi-g++ -v
@@ -619,7 +619,7 @@ jobs:
       - name: run-test-on-target
         run: |
           sleep 2
-          PATH="${{ runner.workspace }}/wide-integer/emu_env/arm-gnu-toolchain-14.3.rel1-x86_64-arm-none-eabi/bin:$PATH"
+          PATH="${{ runner.workspace }}/wide-integer/emu_env/arm-gnu-toolchain-15.3.rel1-x86_64-arm-none-eabi/bin:$PATH"
           echo 'Run test on target'
           echo
           arm-none-eabi-gdb ./bin/${{ matrix.example }}.elf -x ./target/build/test_examples_emulator.gdb > ./${{ matrix.example }}.txt