diff --git a/src/Benchmark/packages.config b/src/Benchmark/packages.config
index 473e566..b520660 100644
--- a/src/Benchmark/packages.config
+++ b/src/Benchmark/packages.config
@@ -12,7 +12,7 @@
   <package id="CommandLineParser" version="2.4.3" targetFramework="net462" />
   <package id="Dapper" version="1.60.6" targetFramework="net462" />
   <package id="DateMath" version="1.1.0" targetFramework="net462" />
-  <package id="Google.Protobuf" version="3.6.1" targetFramework="net462" />
+  <package id="Google.Protobuf" version="3.15.0" targetFramework="net462" />
   <package id="Microsoft.Bcl.AsyncInterfaces" version="1.0.0" targetFramework="net462" />
   <package id="Microsoft.CodeAnalysis.Analyzers" version="2.6.3" targetFramework="net462" developmentDependency="true" />
   <package id="Microsoft.CodeAnalysis.Common" version="2.10.0" targetFramework="net462" />