diff --git a/backend/requirements.txt b/backend/requirements.txt
index 6708e571fd..150ce4f21a 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -64,7 +64,7 @@ pymdown-extensions==10.14.2
 docx2txt==0.8
 python-pptx==1.0.2
 unstructured==0.18.18
-nltk==3.9.1
+nltk==3.9.2
 Markdown==3.9
 pypandoc==1.15
 pandas==2.2.3