diff --git a/requirements.txt b/requirements.txt
index 6dfbde1..a9f9e40 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,7 +37,7 @@ MarkupSafe==1.1.1
 matplotlib==3.1.1
 more-itertools==7.2.0
 murmurhash==1.0.2
-nltk==3.4.4
+nltk==3.4.5
 numpy==1.17.0
 numpydoc==0.9.1
 overrides==1.9