diff --git a/Cargo.toml b/Cargo.toml
index 515f61f..8596cd2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,7 +8,7 @@ repository = "https://github.com/rust-osdev/uart_16550"
 edition = "2018"
 
 [dependencies]
-bitflags = "1.1.0"
+bitflags = "2"
 rustversion = "1.0.5"
 
 [target.'cfg(any(target_arch = "x86", target_arch = "x86_64"))'.dependencies]
diff --git a/Changelog.md b/Changelog.md
index 2080f59..327bc63 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,5 +1,7 @@
 # Unreleased
 
+- Update bitflags dependency to version 2 ([#33](https://github.com/rust-osdev/uart_16550/pull/33))
+
 # 0.3.0 – 2023-08-04
 
 - Internal rewrite of port operations to work on both `x86` and `x86_64` ([#29](https://github.com/rust-osdev/uart_16550/pull/29))
diff --git a/src/lib.rs b/src/lib.rs
index 8be7cd2..4f65f2f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -84,6 +84,8 @@ pub use crate::port::SerialPort;
 
 bitflags! {
     /// Interrupt enable flags
+    #[repr(transparent)]
+    #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
     struct IntEnFlags: u8 {
         const RECEIVED = 1;
         const SENT = 1 << 1;
@@ -95,6 +97,8 @@ bitflags! {
 
 bitflags! {
     /// Line status flags
+    #[repr(transparent)]
+    #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
     struct LineStsFlags: u8 {
         const INPUT_FULL = 1;
         // 1 to 4 unknown