diff --git a/src/sync_connection_wrapper/mod.rs b/src/sync_connection_wrapper/mod.rs
index 76a06da..3ff8ac7 100644
--- a/src/sync_connection_wrapper/mod.rs
+++ b/src/sync_connection_wrapper/mod.rs
@@ -73,6 +73,7 @@ fn from_tokio_join_error(join_error: JoinError) -> diesel::result::Error {
 /// #    some_async_fn().await;
 /// # }
 /// ```
+#[derive(Debug)]
 pub struct SyncConnectionWrapper<C> {
     inner: Arc<Mutex<C>>,
 }