diff --git a/src/WebApiContrib.Formatting.ProtoBuf/packages.config b/src/WebApiContrib.Formatting.ProtoBuf/packages.config
index 41edb7c..c963169 100644
--- a/src/WebApiContrib.Formatting.ProtoBuf/packages.config
+++ b/src/WebApiContrib.Formatting.ProtoBuf/packages.config
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Microsoft.AspNet.WebApi.Client" version="5.2.7" targetFramework="net461" />
-  <package id="Newtonsoft.Json" version="6.0.4" targetFramework="net461" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net461" />
   <package id="protobuf-net" version="3.0.29" targetFramework="net461" />
   <package id="protobuf-net.Core" version="3.0.29" targetFramework="net461" />
   <package id="System.Buffers" version="4.5.1" targetFramework="net461" />