diff --git a/CSharp/GrowthZone.Shared/GrowthZone.Shared.csproj b/CSharp/GrowthZone.Shared/GrowthZone.Shared.csproj
index 7977d1b..2230c68 100644
--- a/CSharp/GrowthZone.Shared/GrowthZone.Shared.csproj
+++ b/CSharp/GrowthZone.Shared/GrowthZone.Shared.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="12.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
   </ItemGroup>
 
 </Project>
diff --git a/CSharp/PasswordGrant/packages.config b/CSharp/PasswordGrant/packages.config
index ea0bb96..687655a 100644
--- a/CSharp/PasswordGrant/packages.config
+++ b/CSharp/PasswordGrant/packages.config
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="Newtonsoft.Json" version="12.0.1" targetFramework="net452" />
+  <package id="Newtonsoft.Json" version="13.0.1" targetFramework="net452" />
   <package id="Thinktecture.IdentityModel.Client" version="4.0.1" targetFramework="net452" />
 </packages>
\ No newline at end of file