diff --git a/backend/requirements.txt b/backend/requirements.txt
index c597947e4..458c57f84 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -44,7 +44,7 @@ sentence-transformers==3.0.1
 pypdf==4.3.1
 docx2txt==0.8
 python-pptx==1.0.0
-unstructured==0.15.7
+unstructured==0.15.9
 nltk==3.9.1
 Markdown==3.7
 pypandoc==1.13