diff --git a/src/SimpleQuery.Tests/packages.config b/src/SimpleQuery.Tests/packages.config
index 696609b..4fa5114 100644
--- a/src/SimpleQuery.Tests/packages.config
+++ b/src/SimpleQuery.Tests/packages.config
@@ -2,7 +2,7 @@
 <packages>
   <package id="Dapper" version="1.50.5" targetFramework="net461" />
   <package id="EntityFramework" version="6.2.0" targetFramework="net461" />
-  <package id="Google.Protobuf" version="3.6.1" targetFramework="net461" />
+  <package id="Google.Protobuf" version="3.15.0" targetFramework="net461" />
   <package id="MSTest.TestAdapter" version="1.4.0" targetFramework="net461" />
   <package id="MSTest.TestFramework" version="1.4.0" targetFramework="net461" />
   <package id="MySql.Data" version="8.0.13" targetFramework="net461" />