diff --git a/MachineEntityFramework/packages.config b/MachineEntityFramework/packages.config
index 0cda0e3..f1ad8dd 100644
--- a/MachineEntityFramework/packages.config
+++ b/MachineEntityFramework/packages.config
@@ -3,6 +3,6 @@
   <package id="BouncyCastle" version="1.8.3.1" targetFramework="net472" />
   <package id="EntityFramework" version="6.2.0" targetFramework="net472" />
   <package id="EntityFramework.ru" version="6.2.0" targetFramework="net472" />
-  <package id="Google.Protobuf" version="3.6.1" targetFramework="net472" />
+  <package id="Google.Protobuf" version="3.15.0" targetFramework="net472" />
   <package id="SSH.NET" version="2016.1.0" targetFramework="net472" />
 </packages>
\ No newline at end of file