diff --git a/crates/sol-macro-expander/src/expand/contract.rs b/crates/sol-macro-expander/src/expand/contract.rs
index e49f917b7..b5717615c 100644
--- a/crates/sol-macro-expander/src/expand/contract.rs
+++ b/crates/sol-macro-expander/src/expand/contract.rs
@@ -602,7 +602,7 @@ enum ToExpand<'a> {
     Events(&'a [&'a ItemEvent]),
 }
 
-impl<'a> ToExpand<'a> {
+impl ToExpand<'_> {
     fn to_data(&self, expander: &CallLikeExpander<'_>) -> ExpandData {
         let &CallLikeExpander { cx, ref contract_name, .. } = expander;
         match self {
@@ -660,7 +660,7 @@ impl<'a> ToExpand<'a> {
     }
 }
 
-impl<'a> CallLikeExpander<'a> {
+impl CallLikeExpander<'_> {
     fn expand(&self, to_expand: ToExpand<'_>, attrs: Vec<Attribute>) -> TokenStream {
         let data = &to_expand.to_data(self);
 
diff --git a/crates/sol-macro-expander/src/expand/mod.rs b/crates/sol-macro-expander/src/expand/mod.rs
index f4a85c125..3f2e3027c 100644
--- a/crates/sol-macro-expander/src/expand/mod.rs
+++ b/crates/sol-macro-expander/src/expand/mod.rs
@@ -198,7 +198,7 @@ impl<'ast> ExpCtxt<'ast> {
 }
 
 // resolve
-impl<'ast> ExpCtxt<'ast> {
+impl ExpCtxt<'_> {
     fn parse_file_attributes(&mut self) -> Result<()> {
         let (attrs, others) = self.ast.split_attrs()?;
         self.attrs = attrs;