diff --git a/ProtoHelper/packages.config b/ProtoHelper/packages.config
index a95b40f..3321793 100644
--- a/ProtoHelper/packages.config
+++ b/ProtoHelper/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Google.Protobuf" version="3.11.4" targetFramework="net461" />
+  <package id="Google.Protobuf" version="3.15.0" targetFramework="net461" />
   <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net461" />
   <package id="System.Buffers" version="4.4.0" targetFramework="net461" />
   <package id="System.Memory" version="4.5.2" targetFramework="net461" />