diff --git a/requirements.txt b/requirements.txt
index 4f0763f..72b5834 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ numpy>=1.24.0
 pandas>=2.0.0
 
 # Natural Language Processing
-nltk>=3.8.1
+nltk>=3.9.4
 spacy>=3.6.0
 sentence-transformers>=2.2.0