diff --git a/confidential-data-hub/kms/src/plugins/mod.rs b/confidential-data-hub/kms/src/plugins/mod.rs
index defba9b11..89ce89fd5 100644
--- a/confidential-data-hub/kms/src/plugins/mod.rs
+++ b/confidential-data-hub/kms/src/plugins/mod.rs
@@ -17,6 +17,7 @@ pub mod kbs;
 #[derive(AsRefStr, EnumString)]
 pub enum DecryptorProvider {
     #[cfg(feature = "aliyun")]
+    #[strum(ascii_case_insensitive)]
     Aliyun,
 }