diff --git a/Redpoint-Data/tagging/requirements.txt b/Redpoint-Data/tagging/requirements.txt
index e1dafa8..91fef16 100644
--- a/Redpoint-Data/tagging/requirements.txt
+++ b/Redpoint-Data/tagging/requirements.txt
@@ -1,7 +1,7 @@
 backports.functools-lru-cache==1.4
 cycler==0.10.0
 matplotlib==2.1.1
-nltk==3.4.5
+nltk==3.6.5
 numpy==1.13.3
 pyparsing==2.2.0
 python-dateutil==2.6.1