diff --git a/.github/workflows/autodocs.yaml b/.github/workflows/autodocs.yaml
index eafa7f52def..502feb8b30a 100644
--- a/.github/workflows/autodocs.yaml
+++ b/.github/workflows/autodocs.yaml
@@ -20,6 +20,13 @@ jobs:
         echo text-generation-launcher --help
         python update_doc.py md --check
 
+    - name: Install Protoc
+      uses: arduino/setup-protoc@v1
+    - name: Clean unused files
+      run: |
+        sudo rm -rf /usr/local/lib/android # will release about 10 GB if you don't need Android
+        sudo rm -rf /usr/share/dotnet # will release about 20GB if you don't need .NET
+
     - name: Install
       run: |
         make install-cpu