diff --git a/src/backend/requirements.txt b/src/backend/requirements.txt
index 7874b56..c723533 100644
--- a/src/backend/requirements.txt
+++ b/src/backend/requirements.txt
@@ -19,7 +19,7 @@ sqlparse==0.5.0
 urllib3==1.26.19
 Werkzeug==3.0.6
 faiss-cpu==1.7.4
-pypdf==3.17.0
+pypdf==6.4.0
 pypdf2==3.0.1
 langchain==0.3.0
 anthropic==0.2.10