diff --git a/chapter4/jupyter/requirements.txt b/chapter4/jupyter/requirements.txt
index 67cd5cb..292039a 100644
--- a/chapter4/jupyter/requirements.txt
+++ b/chapter4/jupyter/requirements.txt
@@ -2,7 +2,7 @@ numpy==1.15.1
 pandas==0.23.4
 matplotlib==2.2.3
 prompt-toolkit==2.0.4
-ipython==7.0.0
+ipython==7.16.3
 jupyter==1.0.0
 psycopg2==2.7.5
 sqlalchemy==1.3.0