diff --git a/crates/ctap2-proto/src/extensions/cred_protect.rs b/crates/ctap2-proto/src/extensions/cred_protect.rs
index 639945e..7f7731f 100644
--- a/crates/ctap2-proto/src/extensions/cred_protect.rs
+++ b/crates/ctap2-proto/src/extensions/cred_protect.rs
@@ -1,3 +1,6 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
 pub enum Policy {
     UserVerificationOptional = 0x01,
     UserVerificationOptionalWithCredentialIdList = 0x02,