diff --git a/src/requirements.txt b/src/requirements.txt
index 981f0a8..ad62315 100644
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -4,7 +4,7 @@ beautifulsoup4==4.6.0
 certifi==2018.1.18
 google_api_python_client==1.6.5
 matplotlib==2.1.2
-nltk==3.2.5
+nltk==3.4.5
 numpy==1.14.0
 pandas==0.22.0
 scipy==1.0.0