diff --git a/requirements.txt b/requirements.txt
index f8606b1..7c5d8c5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -20,7 +20,7 @@ httplib2==0.19.1
 idna==2.10
 joblib==1.0.1
 mypy-extensions==0.4.3
-nltk==3.6.2
+nltk==3.8.1
 numpy==1.19.4
 oauth2==1.9.0.post1
 oauthlib==3.1.0