diff --git a/requirements.txt b/requirements.txt
index 356a3e9..1c2f475 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,6 +12,6 @@ readability-lxml==0.7
 requests==2.21.0
 sentry-sdk>=0,<1
 tldextract==2.2.0
-nltk==3.4.1
+nltk==3.6.6
 six==1.12.0
 langdetect==1.0.9