diff --git a/bindings/rust/s2n-tls/src/client_hello.rs b/bindings/rust/s2n-tls/src/client_hello.rs
index 0414c15c73e..78aab7a45a7 100644
--- a/bindings/rust/s2n-tls/src/client_hello.rs
+++ b/bindings/rust/s2n-tls/src/client_hello.rs
@@ -144,6 +144,7 @@ pub mod fingerprint {
 
     use super::ClientHello;
 
+    #[non_exhaustive]
     #[derive(Copy, Clone)]
     pub enum FingerprintType {
         JA3,