diff --git a/.github/workflows/micropython.yml b/.github/workflows/micropython.yml
index 1261337..5874676 100644
--- a/.github/workflows/micropython.yml
+++ b/.github/workflows/micropython.yml
@@ -70,7 +70,7 @@ jobs:
     - name: Install Arm GNU Toolchain (arm-none-eabi-gcc)
       uses: carlosperate/arm-none-eabi-gcc-action@v1
       with:
-        release: '9-2020-q2'
+        release: '13.3.Rel1'
 
     - name: Install CCache
       run: |