diff --git a/requirements.txt b/requirements.txt
index 19a4c505c..b1baa5fe8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,6 +26,6 @@ https://github.com/marianoguerra/feedformatter/archive/master.zip
 pytest==6.0.2
 pytest-cov==2.10.1
 codecov==2.1.9
-nltk==3.5
+nltk==3.6.6
 dicttoxml==1.7.4
 beautifulsoup4==4.9.2
\ No newline at end of file