diff --git a/CHANGELOG.md b/CHANGELOG.md
index fbc1c5ca..e8dd8a26 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,7 +9,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Added
 
- - Serial flow control enable
+ - Serial flow control enable [#775]
  - `i2c_scanner` example [#758]
  - Enable `sdio` for stm32f446
  - port LTDC implementation and example from stm32f7xx-hal [#731]
@@ -36,6 +36,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 [#758]: https://github.com/stm32-rs/stm32f4xx-hal/pull/758
 [#773]: https://github.com/stm32-rs/stm32f4xx-hal/pull/773
 
+[#775]: https://github.com/stm32-rs/stm32f4xx-hal/pull/775
+
 ## [v0.21.0] - 2024-05-30
 
 ### Changed
diff --git a/src/serial.rs b/src/serial.rs
index d4192bb2..bf00718c 100644
--- a/src/serial.rs
+++ b/src/serial.rs
@@ -111,6 +111,8 @@ pub enum CFlag {
     TransmissionComplete = 1 << 6,
     /// LIN break detection flag
     LinBreak = 1 << 8,
+    /// Clear to send flag
+    Cts = 1 << 9,
 }
 
 pub mod config;
diff --git a/src/serial/uart_impls.rs b/src/serial/uart_impls.rs
index 8d0ca7d2..4ae91e1c 100644
--- a/src/serial/uart_impls.rs
+++ b/src/serial/uart_impls.rs
@@ -268,15 +268,22 @@ macro_rules! uartCommon {
 pub trait RBFlowControlImpl {
     fn enable_rts(&self, state: bool);
     fn enable_cts(&self, state: bool);
+    fn listen_cts(&self, state: bool);
 }
 
 impl RBFlowControlImpl for RegisterBlockUsart {
+    #[inline(always)]
     fn enable_rts(&self, state: bool) {
         self.cr3().modify(|_, w| w.rtse().bit(state));
     }
+    #[inline(always)]
     fn enable_cts(&self, state: bool) {
         self.cr3().modify(|_, w| w.ctse().bit(state));
     }
+    #[inline(always)]
+    fn listen_cts(&self, state: bool) {
+        self.cr3().modify(|_, w| w.ctsie().bit(state))
+    }
 }
 
 impl RegisterBlockImpl for RegisterBlockUsart {
@@ -545,7 +552,7 @@ where {
 
 impl<UART: Instance + SerialFlowControl, WORD> Serial<UART, WORD>
 where
-    UART::RegisterBlock: RBFlowControlImpl,
+    UART::RB: RBFlowControlImpl,
 {
     pub fn with_rts(self, rts: impl Into<UART::Rts>) -> Self {
         self.rx.usart.enable_rts(true);
@@ -569,6 +576,12 @@ where
     pub fn disable_clear_to_send(&mut self) {
         self.tx.usart.enable_cts(false);
     }
+    pub fn listen_clear_to_send(&mut self) {
+        self.tx.usart.listen_cts(true)
+    }
+    pub fn unlisten_clear_to_send(&mut self) {
+        self.tx.usart.listen_cts(false)
+    }
 }
 
 impl<UART: Instance, WORD> RxISR for Serial<UART, WORD>