diff --git a/roles/HSLinUCB/files/simulation/requirements.txt b/roles/HSLinUCB/files/simulation/requirements.txt
index 2be3309..db26466 100644
--- a/roles/HSLinUCB/files/simulation/requirements.txt
+++ b/roles/HSLinUCB/files/simulation/requirements.txt
@@ -11,7 +11,7 @@ kafka==1.3.5
 Keras==2.3.1
 kubernetes==12.0.0
 matplotlib==3.1.3
-notebook==6.4.10
+notebook==6.4.12
 numpy==1.21.0
 pandas==0.25.1
 pickleshare==0.7.5