diff --git a/src/Microsoft.AspNetCore.Http.Abstractions/StatusCodes.cs b/src/Microsoft.AspNetCore.Http.Abstractions/StatusCodes.cs
index 9c0f4999ce..b40744d0a1 100644
--- a/src/Microsoft.AspNetCore.Http.Abstractions/StatusCodes.cs
+++ b/src/Microsoft.AspNetCore.Http.Abstractions/StatusCodes.cs
@@ -12,6 +12,7 @@ namespace Microsoft.AspNetCore.Http
         public const int Status204NoContent = 204;
         public const int Status205ResetContent = 205;
         public const int Status206PartialContent = 206;
+        public const int Status207MultiStatus = 207;
 
         public const int Status300MultipleChoices = 300;
         public const int Status301MovedPermanently = 301;
@@ -42,6 +43,9 @@ namespace Microsoft.AspNetCore.Http
         public const int Status417ExpectationFailed = 417;
         public const int Status418ImATeapot = 418;
         public const int Status419AuthenticationTimeout = 419;
+        public const int Status422UnprocessableEntity = 422;
+        public const int Status423Locked = 423;
+        public const int Status424FailedDependency = 424;
 
         public const int Status500InternalServerError = 500;
         public const int Status501NotImplemented = 501;
@@ -50,5 +54,6 @@ namespace Microsoft.AspNetCore.Http
         public const int Status504GatewayTimeout = 504;
         public const int Status505HttpVersionNotsupported = 505;
         public const int Status506VariantAlsoNegotiates = 506;
+        public const int Status507InsufficientStorage = 507;
     }
-}
\ No newline at end of file
+}