diff --git a/requirements.txt b/requirements.txt
index 4cc7b674..03973e86 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ msal==1.31.0
 openai==1.66.2
 Pillow==11.3.0
 PyPDF2==3.0.1; sys_platform == 'win32'
-protobuf==4.25.8
+protobuf==5.29.6
 pywin32>=310; sys_platform == 'win32'
 pywinauto==0.6.8; sys_platform == 'win32'
 PyYAML==6.0.1