diff --git a/backend/requirements.txt b/backend/requirements.txt
index 89865b07..fc850726 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -24,6 +24,6 @@ pyarrow>=14.0.0
 openpyxl>=3.1.0
 python-pptx>=0.6.23
 mistune>=3.0.0
-unstructured==0.12.4
+unstructured==0.18.18
 unstructured[pptx]==0.12.4
 unstructured[md]==0.12.4