diff --git a/handson-ml2/requirements.txt b/handson-ml2/requirements.txt
index b276135..8c61e89 100644
--- a/handson-ml2/requirements.txt
+++ b/handson-ml2/requirements.txt
@@ -74,7 +74,7 @@ joblib==0.14.1
 requests==2.24.0
 
 # Nice utility to diff Jupyter Notebooks.
-nbdime==2.1.0
+nbdime==2.1.1
 
 # May be useful with Pandas for complex "where" clauses (e.g., Pandas
 # tutorial).