diff --git a/requirements.txt b/requirements.txt
index 04daab4..dbfdb90 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 tqdm==4.46.0
 wordcloud==1.7.0
-nltk==3.4.5
+nltk==3.6.6
 matplotlib==3.2.1
 gensim==3.8.3
 pandas==1.0.3