diff --git a/lib/absinthe/schema/notation/sdl_render.ex b/lib/absinthe/schema/notation/sdl_render.ex
index 83496b2d5b..78d38a9dec 100644
--- a/lib/absinthe/schema/notation/sdl_render.ex
+++ b/lib/absinthe/schema/notation/sdl_render.ex
@@ -103,14 +103,47 @@ defmodule Absinthe.Schema.Notation.SDL.Render do
 
   @adapter Absinthe.Adapter.LanguageConventions
   defp render(%Blueprint.Schema.InputValueDefinition{} = input_value, type_definitions) do
+    default_value =
+      case input_value.default_value do
+        nil ->
+          nil
+
+        value when is_atom(value) ->
+          typ =
+            case input_value.type do
+              %Absinthe.Blueprint.TypeReference.NonNull{of_type: t} -> t
+              %Absinthe.Blueprint.TypeReference.List{of_type: t} -> t
+              t -> t
+            end
+
+          definition = Enum.find(type_definitions, fn d -> typ == d.identifier end)
+
+          case definition do
+            nil ->
+              value
+
+            _ ->
+              enum = Absinthe.Blueprint.Schema.EnumTypeDefinition.build(definition, nil)
+
+              %Blueprint.Input.Enum{
+                value: Absinthe.Type.Enum.serialize(enum, value),
+                source_location: input_value.source_location
+              }
+          end
+
+        value ->
+          Blueprint.Input.parse(value)
+      end
+
     concat([
       string(@adapter.to_external_name(input_value.name, :argument)),
       ": ",
       render(input_value.type, type_definitions),
-      default(input_value.default_value_blueprint),
+      default(input_value.default_value_blueprint || default_value),
       directives(input_value.directives, type_definitions)
     ])
     |> description(input_value.description)
+    |> deprecation(input_value.deprecation)
   end
 
   defp render(%Blueprint.Schema.FieldDefinition{} = field, type_definitions) do
@@ -122,6 +155,7 @@ defmodule Absinthe.Schema.Notation.SDL.Render do
       directives(field.directives, type_definitions)
     ])
     |> description(field.description)
+    |> deprecation(field.deprecation)
   end
 
   defp render(%Blueprint.Schema.ObjectTypeDefinition{} = object_type, type_definitions) do
@@ -211,6 +245,7 @@ defmodule Absinthe.Schema.Notation.SDL.Render do
       directives(enum_value.directives, type_definitions)
     ])
     |> description(enum_value.description)
+    |> deprecation(enum_value.deprecation)
   end
 
   defp render(%Blueprint.Schema.ScalarTypeDefinition{} = scalar_type, type_definitions) do
@@ -342,6 +377,10 @@ defmodule Absinthe.Schema.Notation.SDL.Render do
     empty()
   end
 
+  defp default(%{value: nil}) do
+    empty()
+  end
+
   defp default(default_value) do
     concat([" = ", render_value(default_value)])
   end
@@ -358,6 +397,14 @@ defmodule Absinthe.Schema.Notation.SDL.Render do
     ])
   end
 
+  defp deprecation(docs, nil) do
+    docs
+  end
+
+  defp deprecation(docs, %Absinthe.Type.Deprecation{reason: reason}) do
+    concat([docs, " @deprecated(reason: \"#{reason}\")"])
+  end
+
   defp implements(%{interface_blueprints: [], interfaces: []}, _) do
     empty()
   end
diff --git a/test/absinthe/schema/sdl_render_test.exs b/test/absinthe/schema/sdl_render_test.exs
index f9d27f3df8..d2d3a8ffb7 100644
--- a/test/absinthe/schema/sdl_render_test.exs
+++ b/test/absinthe/schema/sdl_render_test.exs
@@ -196,7 +196,9 @@ defmodule Absinthe.Schema.SdlRenderTest do
 
       field :echo, :string do
         arg :times, :integer, default_value: 10, description: "The number of times"
-        arg :time_interval, :integer
+        arg :time_interval, :integer, deprecate: "Old interval"
+        arg :time_string, :string, default_value: "2021"
+        arg :order_status, non_null(:order_status), default_value: :processing
       end
 
       field :search, :search_result
@@ -219,6 +221,7 @@ defmodule Absinthe.Schema.SdlRenderTest do
     object :order do
       field :id, :id
       field :name, :string
+      field :braun, :string, deprecate: "Deprecated"
       field :status, :order_status
       field :other_status, :status
       import_fields :imported_fields
@@ -251,9 +254,13 @@ defmodule Absinthe.Schema.SdlRenderTest do
              type RootQueryType {
                echo(
                  "The number of times"
-                 times: Int
+                 times: Int = 10
 
-                 timeInterval: Int
+                 timeInterval: Int @deprecated(reason: \"Old interval\")
+
+                 timeString: String = "2021"
+
+                 orderStatus: OrderStatus! = PROCESSING
                ): String
                search: SearchResult
              }
@@ -280,6 +287,7 @@ defmodule Absinthe.Schema.SdlRenderTest do
                imported: Boolean!
                id: ID
                name: String
+               braun: String @deprecated(reason: \"Deprecated\")
                status: OrderStatus
                otherStatus: Status
              }