diff --git a/requirements.txt b/requirements.txt
index 9bfab70..133df5f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-nltk==3.2.4
+nltk==3.4.5
 torchtext==0.2.0
 torch==0.3.0
 tensorboardX==0.8