diff --git a/mod.ts b/mod.ts
index ac070db..9b4a823 100644
--- a/mod.ts
+++ b/mod.ts
@@ -6,4 +6,5 @@ export * from "./queue.ts";
 export * from "./rw_lock.ts";
 export * from "./semaphore.ts";
 export * from "./stack.ts";
+export * from "./state.ts";
 export * from "./testutil.ts";