diff --git a/README.md b/README.md
index 6748fb4..c6e987a 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,7 @@ Default min delay is 0 minutes.
 
 Make sure python3 is installed.
 
-Twoot depends on sqlite3 and beautifulsoup4 python module: `sudo pip install sqlite3 beautifulsoup4`
+Twoot depends on sqlite3, beautifulsoup4 and mastodon python module: `sudo pip install sqlite3 beautifulsoup4 mastodon`
 
 In your user folder, execute `git clone https://gitlab.com/jeancf/twoot.git`
 to clone repo with twoot.py script.