diff --git a/chatbot-integration/requirements.txt b/chatbot-integration/requirements.txt
index 5cd714e..3fc7259 100644
--- a/chatbot-integration/requirements.txt
+++ b/chatbot-integration/requirements.txt
@@ -5,7 +5,7 @@ Flask==2.2.3
 requests==2.28.1
 
 # Natural Language Processing libraries
-nltk==3.7
+nltk==3.9.1
 spacy==3.4.0
 # If using spaCy, you may also need to download a language model
 # python -m spacy download en_core_web_sm