diff --git a/requirements.txt b/requirements.txt
index e48f674..7fd0473 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ beautifulsoup4==4.6.0
 certifi==2018.1.18
 chardet==3.0.4
 idna==2.6
-nltk==3.2.5
+nltk==3.4.5
 requests==2.18.4
 six==1.11.0
 urllib3==1.22
diff --git a/setup.py b/setup.py
index d52ff7b..0ff63fa 100644
--- a/setup.py
+++ b/setup.py
@@ -26,7 +26,7 @@
         'certifi==2018.1.18',
         'chardet==3.0.4',
         'idna==2.6',
-        'nltk==3.2.5',
+        'nltk==3.4.5',
         'requests==2.18.4',
         'six==1.11.0',
         'urllib3==1.22',