diff --git a/src/DotSwashbuckle.AspNetCore.Newtonsoft/SchemaGenerator/NewtonsoftDataContractResolver.cs b/src/DotSwashbuckle.AspNetCore.Newtonsoft/SchemaGenerator/NewtonsoftDataContractResolver.cs
index 0eae977c90..1d849d5d9d 100644
--- a/src/DotSwashbuckle.AspNetCore.Newtonsoft/SchemaGenerator/NewtonsoftDataContractResolver.cs
+++ b/src/DotSwashbuckle.AspNetCore.Newtonsoft/SchemaGenerator/NewtonsoftDataContractResolver.cs
@@ -72,6 +72,15 @@ public DataContract GetDataContractForType(Type type)
                     jsonConverter: JsonConverterFunc);
             }
 
+            if (JsonSerializerDataContractResolver.IsSupportedDictionary(type, out Type _, out Type valueType1))
+            {
+                return DataContract.ForDictionary(
+                    underlyingType: type,
+                    valueType: valueType1,
+                    keys: null, // STJ doesn't currently support dictionaries with enum key types
+                    jsonConverter: JsonConverterFunc);
+            }
+
             if (JsonSerializerDataContractResolver.IsSupportedCollection(type, out Type itemType))
             {
                 return DataContract.ForArray(
diff --git a/src/DotSwashbuckle.AspNetCore.SwaggerGen/SchemaGenerator/JsonSerializerDataContractResolver.cs b/src/DotSwashbuckle.AspNetCore.SwaggerGen/SchemaGenerator/JsonSerializerDataContractResolver.cs
index 8e3ac9516d..0b479c76c8 100644
--- a/src/DotSwashbuckle.AspNetCore.SwaggerGen/SchemaGenerator/JsonSerializerDataContractResolver.cs
+++ b/src/DotSwashbuckle.AspNetCore.SwaggerGen/SchemaGenerator/JsonSerializerDataContractResolver.cs
@@ -83,7 +83,7 @@ private string JsonConverterFunc(object value)
             return JsonSerializer.Serialize(value, _serializerOptions);
         }
 
-        public bool IsSupportedDictionary(Type type, out Type keyType, out Type valueType)
+        public static bool IsSupportedDictionary(Type type, out Type keyType, out Type valueType)
         {
             if (type.IsConstructedFrom(typeof(IDictionary<,>), out Type constructedType)
                 || type.IsConstructedFrom(typeof(IReadOnlyDictionary<,>), out constructedType))