diff --git a/requirements.txt b/requirements.txt
index 50cc06f..856a661 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 certifi==2017.7.27.1
 chardet==3.0.4
 idna==2.6
-nltk==3.2.4
+nltk==3.4.5
 numpy==1.13.1
 oauthlib==2.0.6
 pandas==0.20.3