diff --git a/tools/src/main.rs b/tools/src/main.rs
index 3851246..1662325 100644
--- a/tools/src/main.rs
+++ b/tools/src/main.rs
@@ -339,7 +339,7 @@ fn extract_docstring(attrs: &[Attribute]) -> Option<String> {
     // Convert the attribute’s token stream back to source‑like text.
     let text = attrs
         .iter()
-        .map(|a| a.tokens.to_string())
+        .map(|a| a.to_token_stream().to_string())
         .collect::<Vec<_>>()
         .join("\n");