diff --git a/instant-xml-macros/src/case.rs b/instant-xml-macros/src/case.rs
index aeef600..f5701ff 100644
--- a/instant-xml-macros/src/case.rs
+++ b/instant-xml-macros/src/case.rs
@@ -133,7 +133,7 @@ pub struct ParseError<'a> {
     unknown: &'a str,
 }
 
-impl<'a> Display for ParseError<'a> {
+impl Display for ParseError<'_> {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
         f.write_str("unknown rename rule `rename_all = ")?;
         Debug::fmt(self.unknown, f)?;