diff --git a/hands-on-ml-with-sklearn-and-tf/handson-ml-master/requirements.txt b/hands-on-ml-with-sklearn-and-tf/handson-ml-master/requirements.txt
index 69bf446..1ffcace 100644
--- a/hands-on-ml-with-sklearn-and-tf/handson-ml-master/requirements.txt
+++ b/hands-on-ml-with-sklearn-and-tf/handson-ml-master/requirements.txt
@@ -72,7 +72,7 @@ scikit-image==0.13.1
 ##### Extra packages (optional)
 
 # Nice utility to diff Jupyter Notebooks.
-nbdime==0.4.1
+nbdime==1.1.1
 
 # May be useful with Pandas for complex "where" clauses (e.g., Pandas
 # tutorial).