diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e26a5618..f6fb9eea 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -47,7 +47,8 @@ jobs:
           cd /tmp
           sudo apt-get update
           sudo apt-get --no-install-recommends install -y ninja-build gcc-arm-linux-gnueabihf g++-arm-linux-gnueabihf
-          wget --tries 4 --no-check-certificate --quiet https://developer.arm.com/-/media/Files/downloads/gnu-rm/9-2019q4/RC2.1/gcc-arm-none-eabi-9-2019-q4-major-x86_64-linux.tar.bz2 -O gcc-arm.tar.bz2
+          wget --tries 4 --quiet https://developer.arm.com/-/media/Files/downloads/gnu-rm/9-2019q4/RC2.1/gcc-arm-none-eabi-9-2019-q4-major-x86_64-linux.tar.bz2 -O gcc-arm.tar.bz2
+          echo "bcd840f839d5bf49279638e9f67890b2ef3a7c9c7a9b25271e83ec4ff41d177a  gcc-arm.tar.bz2" | sha256sum -c
           tar xjf gcc-arm.tar.bz2
           echo "PATH=/tmp/gcc-arm-none-eabi-9-2019-q4-major/bin:$PATH" >> "$GITHUB_ENV"
       - name: Checkout