diff --git a/bootstrap_ubuntu.sh b/bootstrap_ubuntu.sh
index 3c8618f..d875c8c 100755
--- a/bootstrap_ubuntu.sh
+++ b/bootstrap_ubuntu.sh
@@ -14,7 +14,7 @@ fi
 sudo apt install -y $PGS
 
 # 3. cleanup
-sudo apt-get autoremove && sudo apt-get autoclean
+sudo apt-get autoremove -y && sudo apt-get autoclean -y
 
 # 4. set default editor
 sudo update-alternatives --set editor /usr/bin/vim.gtk-py2