diff --git a/Chapter01/requirements.txt b/Chapter01/requirements.txt
index e9c5350..f674fa2 100644
--- a/Chapter01/requirements.txt
+++ b/Chapter01/requirements.txt
@@ -45,7 +45,7 @@ jupyter-core==4.6.1
 jupyter-highlight-selected-word==0.2.0
 jupyter-latex-envs==1.4.6
 jupyter-nbextensions-configurator==0.4.1
-jupyterlab==1.2.6
+jupyterlab==1.2.21
 jupyterlab-server==1.0.6
 Keras-Applications==1.0.8
 Keras-Preprocessing==1.1.0