diff --git a/requirements.txt b/requirements.txt
index 0c5f92b..4668281 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 gensim==3.7.3
 matplotlib==3.0.2
-nltk==3.3
+nltk==3.4.5
 numpy==1.15.0
 pandas==0.23.4
\ No newline at end of file