diff --git a/SimpleIdentityServer/src/Apis/Common/SimpleIdServer.Concurrency/SimpleIdServer.Concurrency.csproj b/SimpleIdentityServer/src/Apis/Common/SimpleIdServer.Concurrency/SimpleIdServer.Concurrency.csproj
index 277072538..617f446fd 100644
--- a/SimpleIdentityServer/src/Apis/Common/SimpleIdServer.Concurrency/SimpleIdServer.Concurrency.csproj
+++ b/SimpleIdentityServer/src/Apis/Common/SimpleIdServer.Concurrency/SimpleIdServer.Concurrency.csproj
@@ -20,6 +20,6 @@
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="2.1.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Core" Version="2.1.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="2.1.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
   </ItemGroup>
 </Project>
diff --git a/SimpleIdentityServer/src/Apis/Common/SimpleIdServer.Storage/SimpleIdServer.Storage.csproj b/SimpleIdentityServer/src/Apis/Common/SimpleIdServer.Storage/SimpleIdServer.Storage.csproj
index 4e23d1cb0..b81b9199a 100644
--- a/SimpleIdentityServer/src/Apis/Common/SimpleIdServer.Storage/SimpleIdServer.Storage.csproj
+++ b/SimpleIdentityServer/src/Apis/Common/SimpleIdServer.Storage/SimpleIdServer.Storage.csproj
@@ -15,7 +15,7 @@
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="2.1.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc.Core" Version="2.1.0" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="2.1.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
   </ItemGroup>
 
   <ItemGroup>