diff --git a/src/modes/server/api/mod.rs b/src/modes/server/api/mod.rs
index eba8c02..350819c 100644
--- a/src/modes/server/api/mod.rs
+++ b/src/modes/server/api/mod.rs
@@ -12,6 +12,7 @@ use utoipa_swagger_ui::SwaggerUi;
 
 #[derive(OpenApi)]
 #[openapi(
+    openapi = "3.0.0",
     paths(
         status::handle_status,
         item::handle_list_items,