diff --git a/koucha/src/lib.rs b/koucha/src/lib.rs
index a20a9dc..3158657 100644
--- a/koucha/src/lib.rs
+++ b/koucha/src/lib.rs
@@ -1,6 +1,6 @@
 use std::error::Error;
 
-type Result<T> = std::result::Result<T, Box<dyn Error>>;
+pub type Result<T> = std::result::Result<T, Box<dyn Error>>;
 
 pub mod db;
 pub mod fetch;
@@ -9,7 +9,9 @@ pub mod score;
 #[cfg(test)]
 pub mod test_utils;
 
+#[derive(Clone)]
 pub struct AdapterPool(sqlx::SqlitePool);
+#[derive(Clone)]
 pub struct AdapterClient(reqwest::Client);
 
 pub struct AdapterBuilder {
@@ -38,6 +40,7 @@ impl AdapterBuilder {
   }
 }
 
+#[derive(Clone)]
 pub struct Adapter {
   db: AdapterPool,
   client: AdapterClient,