diff --git a/backend/requirements.txt b/backend/requirements.txt
index d70468b..a34dd70 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,18 +1,18 @@
 # Excel Processing
-openpyxl==3.1.2
+openpyxl==3.1.5
 pandas==2.1.4
-xlsxwriter==3.1.9
+xlsxwriter==3.2.9
 
 # Data Processing
 numpy==1.26.2
 
 # API (if running as separate service)
-fastapi==0.109.0
-uvicorn==0.25.0
-python-multipart==0.0.6
+fastapi==0.128.0
+uvicorn==0.40.0
+python-multipart==0.0.22
 
 # Utilities
-python-dateutil==2.8.2
+python-dateutil==2.9.0.post0
 
 # Testing
 pytest==7.4.3