diff --git a/.github/workflows/ubuntu_20_04.yml b/.github/workflows/ubuntu_20_04.yml
index 042de80..83d7abe 100644
--- a/.github/workflows/ubuntu_20_04.yml
+++ b/.github/workflows/ubuntu_20_04.yml
@@ -17,7 +17,7 @@ jobs:
 
       - name: local apt dependencies
         run: |
-          apt install python3-vcstool
+          sudo apt install python3-vcstool
           mkdir staging
           cd staging
           sudo ../ros_from_src/dependencies.sh