diff --git a/core/src/ast/data.rs b/core/src/ast/data.rs
index 38b0190..4b91595 100644
--- a/core/src/ast/data.rs
+++ b/core/src/ast/data.rs
@@ -413,7 +413,7 @@ impl<'a> From<&'a syn::Fields> for Style {
     }
 }
 
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub enum NestedMeta {
     Meta(syn::Meta),
     Lit(syn::Lit),