diff --git a/plugins/authenticator/Cargo.toml b/plugins/authenticator/Cargo.toml
index 339cd1687..e0e71a75a 100644
--- a/plugins/authenticator/Cargo.toml
+++ b/plugins/authenticator/Cargo.toml
@@ -20,7 +20,7 @@ once_cell = "1"
 sha2 = "0.10"
 base64 = "0.21"
 chrono = "0.4"
-bytes = "1.5"
+bytes = "1"
 byteorder = "1"
 openssl = "0.10"
 
diff --git a/plugins/authenticator/src/u2f_crate/authorization.rs b/plugins/authenticator/src/u2f_crate/authorization.rs
index 611ab8322..35a1a3e1e 100644
--- a/plugins/authenticator/src/u2f_crate/authorization.rs
+++ b/plugins/authenticator/src/u2f_crate/authorization.rs
@@ -39,7 +39,7 @@ pub fn parse_sign_response(
 
     let mut msg = vec![];
     msg.put(app_id_hash.as_ref());
-    msg.put(*user_presence_flag);
+    msg.put_u8(*user_presence_flag);
     msg.put(counter);
     msg.put(client_data_hash.as_ref());
 
@@ -61,5 +61,5 @@ pub fn parse_sign_response(
 
 fn get_counter(counter: &[u8]) -> u32 {
     let mut buf = Cursor::new(counter);
-    buf.get_u32_be()
+    buf.get_u32()
 }