diff --git a/juniper/src/macros/tests/args.rs b/juniper/src/macros/tests/args.rs
index 0713fff2..b98ebc32 100644
--- a/juniper/src/macros/tests/args.rs
+++ b/juniper/src/macros/tests/args.rs
@@ -74,17 +74,17 @@ impl Root {
         arg1 + arg2
     }
 
-    // TODO: enable once [parameter attributes are supported by proc macros]
-    //       (https://github.com/graphql-rust/juniper/pull/441)
-    //fn attr_arg_descr(
-    //   #[graphql(description = "The arg")]
-    //   arg: i32) -> i32
-    //{ 0 }
-    //fn attr_arg_descr_collapse(
-    //   #[graphql(description = "The first arg")]
-    //   #[graphql(description = "and more details")]
-    //    arg: i32,
-    //) -> i32 { 0 }
+    fn attr_arg_descr(#[graphql(description = "The arg")] arg: i32) -> i32 {
+        0
+    }
+
+    fn attr_arg_descr_collapse(
+        #[graphql(description = "The first arg")]
+        #[graphql(description = "and more details")]
+        arg: i32,
+    ) -> i32 {
+        0
+    }
 
     #[graphql(arguments(arg(default = 123,),))]
     fn arg_with_default(arg: i32) -> i32 {
@@ -580,75 +580,71 @@ async fn introspect_field_multi_args_descr_trailing_comma() {
     .await;
 }
 
-// TODO: enable once [parameter attributes are supported by proc macros]
-//       (https://github.com/graphql-rust/juniper/pull/441)
-// #[tokio::test]
-// fn introspect_field_attr_arg_descr() {
-//     run_args_info_query("attrArgDescr", |args| {
-//         assert_eq!(args.len(), 1);
+#[tokio::test]
+async fn introspect_field_attr_arg_descr() {
+    run_args_info_query("attrArgDescr", |args| {
+        assert_eq!(args.len(), 1);
 
-//         assert!(args.contains(&Value::object(
-//             vec![
-//                 ("name", Value::scalar("arg")),
-//                 ("description", Value::scalar("The arg")),
-//                 ("defaultValue", Value::null()),
-//                 (
-//                     "type",
-//                     Value::object(
-//                         vec![
-//                             ("name", Value::null()),
-//                             (
-//                                 "ofType",
-//                                 Value::object(
-//                                     vec![("name", Value::scalar("Int"))].into_iter().collect(),
-//                                 ),
-//                             ),
-//                         ]
-//                         .into_iter()
-//                         .collect(),
-//                     ),
-//                 ),
-//             ]
-//             .into_iter()
-//             .collect(),
-//         )));
-//     });
-// }
+        assert!(args.contains(&Value::object(
+            vec![
+                ("name", Value::scalar("arg")),
+                ("description", Value::scalar("The arg")),
+                ("defaultValue", Value::null()),
+                (
+                    "type",
+                    Value::object(
+                        vec![
+                            ("name", Value::null()),
+                            (
+                                "ofType",
+                                Value::object(
+                                    vec![("name", Value::scalar("Int"))].into_iter().collect(),
+                                ),
+                            ),
+                        ]
+                        .into_iter()
+                        .collect(),
+                    ),
+                ),
+            ]
+            .into_iter()
+            .collect(),
+        )));
+    });
+}
 
-// TODO: enable once [parameter attributes are supported by proc macros]
-//       (https://github.com/graphql-rust/juniper/pull/441)
-// #[tokio::test]
-// fn introspect_field_attr_arg_descr_collapse() {
-//     run_args_info_query("attrArgDescrCollapse", |args| {
-//         assert_eq!(args.len(), 1);
+#[tokio::test]
+async fn introspect_field_attr_arg_descr_collapse() {
+    run_args_info_query("attrArgDescrCollapse", |args| {
+        assert_eq!(args.len(), 1);
 
-//         assert!(args.contains(&Value::object(
-//             vec![
-//                 ("name", Value::scalar("arg")),
-//                 ("description", Value::scalar("The arg\nand more details")),
-//                 ("defaultValue", Value::null()),
-//                 (
-//                     "type",
-//                     Value::object(
-//                         vec![
-//                             ("name", Value::null()),
-//                             (
-//                                 "ofType",
-//                                 Value::object(
-//                                     vec![("name", Value::scalar("Int"))].into_iter().collect(),
-//                                 ),
-//                             ),
-//                         ]
-//                         .into_iter()
-//                         .collect(),
-//                     ),
-//                 ),
-//             ]
-//             .into_iter()
-//             .collect(),
-//         )));
-//     });
-// }
+        assert!(args.contains(&Value::object(
+            vec![
+                ("name", Value::scalar("arg")),
+                ("description", Value::scalar("The arg\nand more details")),
+                ("defaultValue", Value::null()),
+                (
+                    "type",
+                    Value::object(
+                        vec![
+                            ("name", Value::null()),
+                            (
+                                "ofType",
+                                Value::object(
+                                    vec![("name", Value::scalar("Int"))].into_iter().collect(),
+                                ),
+                            ),
+                        ]
+                        .into_iter()
+                        .collect(),
+                    ),
+                ),
+            ]
+            .into_iter()
+            .collect(),
+        )));
+    });
+}
 
 #[tokio::test]
 async fn introspect_field_arg_with_default() {