diff --git a/Cargo.toml b/Cargo.toml
index 35c86a5..bf91c2a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,9 +26,9 @@ alloc = []
 all = ["alloc"]
 
 [dependencies]
-bitflags = "1.3"
 arrayvec = { version = "0.7", default-features = false }
 log = { version = "0.4", default-features = false }
+bitflags = "2.0"
 
 [dev-dependencies]
-env_logger = "0.9"
+env_logger = "0.10"
diff --git a/src/header.rs b/src/header.rs
index 0c92d15..975428d 100644
--- a/src/header.rs
+++ b/src/header.rs
@@ -253,6 +253,8 @@ pub enum TypeFlag {
 
 bitflags::bitflags! {
     /// UNIX file permissions on octal format.
+    #[repr(transparent)]
+    #[derive(Debug, Clone, Copy, PartialEq, Eq)]
     pub struct ModeFlags: u64 {
         /// Set UID on execution.
         const SetUID = 0o4000;