diff --git a/src/ServiceStack.Api.OpenApi/Specification/OpenApiDeclaration.cs b/src/ServiceStack.Api.OpenApi/Specification/OpenApiDeclaration.cs
index c6af47e300c..7c35c51e7e4 100644
--- a/src/ServiceStack.Api.OpenApi/Specification/OpenApiDeclaration.cs
+++ b/src/ServiceStack.Api.OpenApi/Specification/OpenApiDeclaration.cs
@@ -46,7 +46,7 @@ public class OpenApiDeclaration
         public Dictionary<string, OpenApiSecuritySchema> SecurityDefinitions { get; set; }
 
         [DataMember(Name = "security")]
-        public Dictionary<string, List<string>> Security { get; set; }
+        public List<Dictionary<string, List<string>>> Security { get; set; }
 
         [DataMember(Name = "tags")]
         public List<OpenApiTag> Tags { get; set; }