diff --git a/requirements.txt b/requirements.txt
index b10deb8..47f2beb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 gensim==3.0.0
-nltk==3.6.5
+nltk==3.6.6
 numpy==1.12.1
 Pillow==9.3.0
 progressbar2==3.34.3