diff --git a/requirements.txt b/requirements.txt
index e31e402..fc474f9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -35,7 +35,7 @@ matplotlib==3.2.1
 mistune==0.8.4
 nbconvert==5.6.1
 nbformat==5.0.7
-nltk==3.4.4
+nltk==3.4.5
 notebook==6.0.3
 numpy==1.18.5
 oauthlib==3.1.0