diff --git a/NCodeParser/packages.config b/NCodeParser/packages.config
index a7b5db0..53e9a0b 100644
--- a/NCodeParser/packages.config
+++ b/NCodeParser/packages.config
@@ -10,7 +10,7 @@
   <package id="Google.Apis.Sheets.v4" version="1.42.0.1786" targetFramework="net472" />
   <package id="Google.Cloud.Translate.V3" version="1.0.0-beta02" targetFramework="net472" />
   <package id="Google.LongRunning" version="1.1.0" targetFramework="net472" />
-  <package id="Google.Protobuf" version="3.8.0" targetFramework="net472" />
+  <package id="Google.Protobuf" version="3.15.0" targetFramework="net472" />
   <package id="Grpc.Auth" version="1.22.0" targetFramework="net472" />
   <package id="Grpc.Core" version="1.22.1" targetFramework="net472" />
   <package id="Grpc.Core.Api" version="1.22.1" targetFramework="net472" />