diff --git a/README.md b/README.md
index 395b798fdc4292a1b7ed7dfe0d1141cce4409de0..770a58cdb331ae4dfe13ca4f9a1b0c98fccd02c4 100644
--- a/README.md
+++ b/README.md
@@ -148,7 +148,7 @@ You will then be prompted to enter your username and password which were set dur
 
 You will also nedd some dependencies to run the script, which can be installed using pip:
 
-```pip install --lxml conflator```
+```pip install --upgrade lxml conflator```
 
 The script automatically places your token in ```~/.polytopeapirc``` where the client will pick it up. The token is a long-lived ("offline_access") token.