diff --git a/src/backend/requirements.txt b/src/backend/requirements.txt
index e7373c0..9c08f0b 100644
--- a/src/backend/requirements.txt
+++ b/src/backend/requirements.txt
@@ -13,13 +13,13 @@ PyMySQL==1.1.2
 # Security & Authentication
 bcrypt==5.0.0
 python-jose[cryptography]==3.5.0
-python-multipart==0.0.26
+python-multipart==0.0.27
 psutil==7.2.2
 
 # XML Processing (using secure library)
-lxml==6.0.4
+lxml==6.1.0
 defusedxml==0.7.1
-pypdf==5.1.0
+pypdf==6.10.2
 
 # HTTP Client
 requests==2.33.1