diff --git a/crates/dav/src/privileges.rs b/crates/dav/src/privileges.rs
index 13a3249..3de7679 100644
--- a/crates/dav/src/privileges.rs
+++ b/crates/dav/src/privileges.rs
@@ -35,7 +35,6 @@ impl XmlSerialize for UserPrivilegeSet {
         .serialize(ns, tag, namespaces, writer)
     }
 
-    #[allow(refining_impl_trait)]
     fn attributes<'a>(&self) -> Option<Vec<quick_xml::events::attributes::Attribute<'a>>> {
         None
     }
diff --git a/crates/dav/src/xml/tag_list.rs b/crates/dav/src/xml/tag_list.rs
index 461e511..d180ccc 100644
--- a/crates/dav/src/xml/tag_list.rs
+++ b/crates/dav/src/xml/tag_list.rs
@@ -57,7 +57,6 @@ impl XmlSerialize for TagList {
         Ok(())
     }
 
-    #[allow(refining_impl_trait)]
     fn attributes<'a>(&self) -> Option<Vec<quick_xml::events::attributes::Attribute<'a>>> {
         None
     }
diff --git a/crates/xml/src/se.rs b/crates/xml/src/se.rs
index f8dd249..b8bea7c 100644
--- a/crates/xml/src/se.rs
+++ b/crates/xml/src/se.rs
@@ -15,7 +15,7 @@ pub trait XmlSerialize {
         writer: &mut quick_xml::Writer<W>,
     ) -> std::io::Result<()>;
 
-    fn attributes<'a>(&self) -> Option<impl IntoIterator<Item: Into<Attribute<'a>>>>;
+    fn attributes<'a>(&self) -> Option<Vec<Attribute<'a>>>;
 }
 
 impl<T: XmlSerialize> XmlSerialize for Option<T> {
@@ -33,7 +33,6 @@ impl<T: XmlSerialize> XmlSerialize for Option<T> {
         }
     }
 
-    #[allow(refining_impl_trait)]
     fn attributes<'a>(&self) -> Option<Vec<Attribute<'a>>> {
         None
     }
@@ -96,7 +95,6 @@ impl XmlSerialize for () {
         Ok(())
     }
 
-    #[allow(refining_impl_trait)]
     fn attributes<'a>(&self) -> Option<Vec<quick_xml::events::attributes::Attribute<'a>>> {
         None
     }
diff --git a/crates/xml/src/value.rs b/crates/xml/src/value.rs
index 611bae3..a75c301 100644
--- a/crates/xml/src/value.rs
+++ b/crates/xml/src/value.rs
@@ -140,7 +140,6 @@ impl<T: ValueSerialize> XmlSerialize for T {
         Ok(())
     }
 
-    #[allow(refining_impl_trait)]
     fn attributes<'a>(&self) -> Option<Vec<quick_xml::events::attributes::Attribute<'a>>> {
         None
     }