diff --git a/hw2/src/requirements.txt b/hw2/src/requirements.txt
index 0caa1b6..46797ed 100644
--- a/hw2/src/requirements.txt
+++ b/hw2/src/requirements.txt
@@ -46,7 +46,7 @@ mkl-service==2.3.0
 nbconvert==5.6.0
 nbformat==4.4.0
 nltk==3.4.5
-notebook==6.0.1
+notebook==6.1.5
 numpy==1.17.2
 pandas==0.25.1
 pandocfilters==1.4.2