diff --git a/.github/workflows/ci_cortex_m.yml b/.github/workflows/ci_cortex_m.yml
index 57e1149bb..49ab7c5c3 100644
--- a/.github/workflows/ci_cortex_m.yml
+++ b/.github/workflows/ci_cortex_m.yml
@@ -3,12 +3,12 @@
 name: cortex_m
 
 # Controls when the action will run. Triggers the workflow on push or pull request
-# events but only for the master branch
+# events but only for the dev branch
 on:
   push:
-    branches: [ master ]
+    branches: [ dev ]
   pull_request:
-    branches: [ master ]
+    branches: [ dev ]
     paths:
       - ".github/workflows/ci_cortex_m.yml"
       - 'common/**'
@@ -39,39 +39,24 @@ jobs:
       with:
         submodules: true
 
-    # Store the arm compilers in the cache to speed up builds
-    - name: Cache arm-none-eabi-gcc tools
-      id: cache-arm-gcc
-      uses: actions/cache@v1
-      with:
-        path: $HOME/arm-none-eabi-gcc-9-2019-q4
-        key: ${{ runner.os }}-arm-gcc-9-2019-q4
-
     # Get the arm-non-eabi-gcc toolchain   
     - name: Install arm-none-eabi-gcc
-      uses: fiam/arm-none-eabi-gcc@v1
+      uses: carlosperate/arm-none-eabi-gcc-action@v1
       if: steps.cache-arm-gcc.outputs.cache-hit != 'true'
       with:
-          release: '9-2019-q4' # The arm-none-eabi-gcc release to use.
-          directory: $HOME/arm-none-eabi-gcc-9-2019-q4
+          release: '13.3.Rel1' # The arm-none-eabi-gcc release to use.
 
     # Get CMake into the environment
-    - name: Install cmake 3.19.1
-      uses: lukka/get-cmake@v3.19.1
+    - name: Install cmake
+      uses: lukka/get-cmake@v3.31.0
 
     # Get Ninja into the environment
     - name: Install ninja-build
-      uses: seanmiddleditch/gha-setup-ninja@v3
+      uses: seanmiddleditch/gha-setup-ninja@v5
 
     # Prepare the build system
     - name: Prepare build system
       run: cmake -Bbuild -DCMAKE_TOOLCHAIN_FILE=./cmake/cortex_m${{ matrix.port }}.cmake -GNinja .
-      env:
-        PATH: "$HOME/arm-none-eabi-gcc-9-2019-q4/bin:$PATH"
 
     - name: Compile and link
       run: cmake --build ./build
-      env:
-        PATH: "$HOME/arm-none-eabi-gcc-9-2019-q4/bin:$PATH"
-
-