diff --git a/async-openai/src/types/assistant.rs b/async-openai/src/types/assistant.rs
index cd0aba47..c45e9d71 100644
--- a/async-openai/src/types/assistant.rs
+++ b/async-openai/src/types/assistant.rs
@@ -147,7 +147,8 @@ pub struct AssistantToolsFileSearchOverrides {
 pub enum FileSearchRanker {
     #[serde(rename = "auto")]
     Auto,
-    #[serde(rename = "default_2024_08_21")]
+    #[serde(alias = "default_2024_08_21")]
+    #[serde(alias = "default-2024-08-21")]
     Default2024_08_21,
 }