diff --git a/src/requirements.txt b/src/requirements.txt
index fa115a2..f75f455 100644
--- a/src/requirements.txt
+++ b/src/requirements.txt
@@ -1,5 +1,5 @@
 beautifulsoup4==4.7.1
-nltk==3.6.6
+nltk==3.9
 numpy==1.22.0
 rouge==0.3.2
 scipy==1.10.0