diff --git a/requirements.txt b/requirements.txt
index 1917c81..7be7a6d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ Jinja2==2.8
 lxml==3.6.0
 MarkupSafe==0.23
 newspaper3k==0.1.7
-nltk==3.2.1
+nltk==3.4.5
 paramiko==2.0.2
 pika==0.10.0
 Pillow==3.2.0