diff --git a/DigitalData.Core.Security/JwtSignatureService.cs b/DigitalData.Core.Security/JwtSignatureService.cs
index 2aa5b29..6494af6 100644
--- a/DigitalData.Core.Security/JwtSignatureService.cs
+++ b/DigitalData.Core.Security/JwtSignatureService.cs
@@ -5,21 +5,13 @@ using System.IdentityModel.Tokens.Jwt;
 
 namespace DigitalData.Core.Security
 {
-    public class JwtSignatureService<TPrincipal> : JwtSecurityTokenHandler
+    public class JwtSignatureService<TPrincipal>(IOptions<ClaimDescriptor<TPrincipal>> claimDescriptorOptions, TokenDescriptorProvider descriptorProvider) : JwtSecurityTokenHandler
     {
-        private readonly ClaimDescriptor<TPrincipal> _claimDescriptor;
-
-        private readonly TokenDescriptorProvider _descriptorProvider;
-
-        public JwtSignatureService(IOptions<ClaimDescriptor<TPrincipal>> claimDescriptorOptions, TokenDescriptorProvider descriptorProvider)
-        {
-            _claimDescriptor = claimDescriptorOptions.Value;
-            _descriptorProvider = descriptorProvider;
-        }
+        private readonly ClaimDescriptor<TPrincipal> _claimDescriptor = claimDescriptorOptions.Value;
 
         public SecurityToken CreateToken(TPrincipal subject, TokenDescription description)
         {
-            var descriptor = _descriptorProvider.Create(description: description);
+            var descriptor = descriptorProvider.Create(description: description);
             descriptor.Claims = _claimDescriptor.CreateClaims?.Invoke(subject);
             descriptor.Subject = _claimDescriptor.CreateSubject?.Invoke(subject);
             return CreateToken(descriptor);