diff --git a/tools/src/main.rs b/tools/src/main.rs
index 1662325..ed39e56 100644
--- a/tools/src/main.rs
+++ b/tools/src/main.rs
@@ -8,6 +8,7 @@ use syn::{
     spanned::Spanned, Attribute, FnArg, Item, ItemEnum, ItemFn, ItemImpl, ItemMod, ItemStruct,
     ItemTrait, Pat, Type, Visibility,
 };
+use quote::ToTokens
 
 #[derive(Serialize)]
 struct RustDecl {