diff --git a/setup/unix-ci.py b/setup/unix-ci.py
index 2a89044db3..129b5272d5 100644
--- a/setup/unix-ci.py
+++ b/setup/unix-ci.py
@@ -108,7 +108,7 @@ def main():
         )
         if not ismacos:
             run('sudo', 'apt-get', 'update', '-y')
-            run('sudo', 'apt-get', 'upgrade', '-y')
+            # run('sudo', 'apt-get', 'upgrade', '-y')
             run('sudo', 'apt-get', 'install', '-y', 'gettext', 'libgl1-mesa-dev')
 
     elif action == 'bootstrap':