diff --git a/Fitbit.Portable.DebugSite/packages.config b/Fitbit.Portable.DebugSite/packages.config
index f9ca9b71..3248228f 100644
--- a/Fitbit.Portable.DebugSite/packages.config
+++ b/Fitbit.Portable.DebugSite/packages.config
@@ -24,7 +24,7 @@
   <package id="Microsoft.Owin.Security.Twitter" version="3.0.0" targetFramework="net45" />
   <package id="Microsoft.Web.Infrastructure" version="1.0.0.0" targetFramework="net45" />
   <package id="Modernizr" version="2.6.2" targetFramework="net45" />
-  <package id="Newtonsoft.Json" version="12.0.3" targetFramework="net472" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net472" />
   <package id="Owin" version="1.0" targetFramework="net45" />
   <package id="Respond" version="1.2.0" targetFramework="net45" />
   <package id="WebGrease" version="1.5.2" targetFramework="net45" />
diff --git a/Fitbit.Portable/Fitbit.Portable.csproj b/Fitbit.Portable/Fitbit.Portable.csproj
index 4d1dc9b2..ac2ff7e3 100644
--- a/Fitbit.Portable/Fitbit.Portable.csproj
+++ b/Fitbit.Portable/Fitbit.Portable.csproj
@@ -12,7 +12,7 @@
   </ItemGroup>
   
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.3" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
 </Project>