diff --git a/jupyter_keras_2_2_4_cpu/requirements.txt b/jupyter_keras_2_2_4_cpu/requirements.txt
index 5f5a48f..9d5d194 100644
--- a/jupyter_keras_2_2_4_cpu/requirements.txt
+++ b/jupyter_keras_2_2_4_cpu/requirements.txt
@@ -1,4 +1,4 @@
-jupyterlab==1.2.3
+jupyterlab==1.2.21
 Pillow==6.0.0
 tensorflow==1.9.0
 Keras==2.2.4