diff --git a/SimpleIdentityServer/src/Apis/SimpleIdServer/SimpleIdentityServer.Core.Common/SimpleIdentityServer.Core.Common.csproj b/SimpleIdentityServer/src/Apis/SimpleIdServer/SimpleIdentityServer.Core.Common/SimpleIdentityServer.Core.Common.csproj
index eabc4b569..f4be76d31 100644
--- a/SimpleIdentityServer/src/Apis/SimpleIdServer/SimpleIdentityServer.Core.Common/SimpleIdentityServer.Core.Common.csproj
+++ b/SimpleIdentityServer/src/Apis/SimpleIdServer/SimpleIdentityServer.Core.Common/SimpleIdentityServer.Core.Common.csproj
@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
     <PackageReference Include="Microsoft.AspNetCore.Http.Features" Version="2.1.0" />
     <PackageReference Include="System.Security.Cryptography.OpenSsl" Version="4.4.0" />
   </ItemGroup>
diff --git a/SimpleIdentityServer/src/Apis/Uma/SimpleIdentityServer.Uma.Client/SimpleIdentityServer.Uma.Client.csproj b/SimpleIdentityServer/src/Apis/Uma/SimpleIdentityServer.Uma.Client/SimpleIdentityServer.Uma.Client.csproj
index 948aa480b..e2eb2a20e 100644
--- a/SimpleIdentityServer/src/Apis/Uma/SimpleIdentityServer.Uma.Client/SimpleIdentityServer.Uma.Client.csproj
+++ b/SimpleIdentityServer/src/Apis/Uma/SimpleIdentityServer.Uma.Client/SimpleIdentityServer.Uma.Client.csproj
@@ -18,7 +18,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="2.1.0" />
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.2" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net461' ">
diff --git a/SimpleIdentityServer/src/Apis/Uma/SimpleIdentityServer.Uma.Common/SimpleIdentityServer.Uma.Common.csproj b/SimpleIdentityServer/src/Apis/Uma/SimpleIdentityServer.Uma.Common/SimpleIdentityServer.Uma.Common.csproj
index 9b164203b..9e9722b74 100644
--- a/SimpleIdentityServer/src/Apis/Uma/SimpleIdentityServer.Uma.Common/SimpleIdentityServer.Uma.Common.csproj
+++ b/SimpleIdentityServer/src/Apis/Uma/SimpleIdentityServer.Uma.Common/SimpleIdentityServer.Uma.Common.csproj
@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Newtonsoft.Json" Version="11.0.1" />
+    <PackageReference Include="Newtonsoft.Json" Version="13.0.2" />
   </ItemGroup>
 
   <ItemGroup Condition=" '$(TargetFramework)' == 'net461' ">