diff --git a/natural-language-processing/docker/requirements.txt b/natural-language-processing/docker/requirements.txt
index 77df8f9..d4e7725 100644
--- a/natural-language-processing/docker/requirements.txt
+++ b/natural-language-processing/docker/requirements.txt
@@ -35,7 +35,7 @@ mock==2.0.0
 nbconvert==5.3.1
 nbformat==4.4.0
 nltk==3.2.5
-notebook==5.2.1
+notebook==6.1.5
 numpy==1.13.3
 pandas==0.21.0
 pandocfilters==1.4.2