diff --git a/examples/hardware_check.rs b/examples/hardware_check.rs
index f27a0381..e9a5ca6e 100644
--- a/examples/hardware_check.rs
+++ b/examples/hardware_check.rs
@@ -227,6 +227,7 @@ fn test_single_port(port: &mut dyn serialport::SerialPort, loopback: bool) {
     // Test setting stop bits
     println!("Testing stop bits...");
     stop_bits_check!(port, StopBits::Two);
+    stop_bits_check!(port, StopBits::OnePointFive);
     stop_bits_check!(port, StopBits::One);
 
     // Test bytes to read and write
diff --git a/src/lib.rs b/src/lib.rs
index 200374e8..c01aa777 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -225,6 +225,9 @@ pub enum StopBits {
     /// One stop bit.
     One,
 
+    /// One and a half stop bits.
+    OnePointFive,
+
     /// Two stop bits.
     Two,
 }
@@ -233,6 +236,7 @@ impl fmt::Display for StopBits {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match *self {
             StopBits::One => write!(f, "One"),
+            StopBits::OnePointFive => write!(f, "OnePointFive"),
             StopBits::Two => write!(f, "Two"),
         }
     }
@@ -242,6 +246,7 @@ impl From<StopBits> for u8 {
     fn from(value: StopBits) -> Self {
         match value {
             StopBits::One => 1,
+            StopBits::OnePointFive => 1,
             StopBits::Two => 2,
         }
     }
diff --git a/src/posix/termios.rs b/src/posix/termios.rs
index f53af807..ec718d88 100644
--- a/src/posix/termios.rs
+++ b/src/posix/termios.rs
@@ -198,6 +198,7 @@ pub(crate) fn set_data_bits(termios: &mut Termios, data_bits: DataBits) {
 pub(crate) fn set_stop_bits(termios: &mut Termios, stop_bits: StopBits) {
     match stop_bits {
         StopBits::One => termios.c_cflag &= !libc::CSTOPB,
+        StopBits::OnePointFive => termios.c_cflag &= !libc::CSTOPB,
         StopBits::Two => termios.c_cflag |= libc::CSTOPB,
     };
 }
diff --git a/src/windows/com.rs b/src/windows/com.rs
index 5573ab77..c3ab9aad 100644
--- a/src/windows/com.rs
+++ b/src/windows/com.rs
@@ -326,6 +326,7 @@ impl SerialPort for COMPort {
         let dcb = dcb::get_dcb(self.handle)?;
         match dcb.StopBits {
             TWOSTOPBITS => Ok(StopBits::Two),
+            ONE5STOPBITS => Ok(StopBits::OnePointFive),
             ONESTOPBIT => Ok(StopBits::One),
             _ => Err(Error::new(
                 ErrorKind::Unknown,
diff --git a/src/windows/dcb.rs b/src/windows/dcb.rs
index d0207fd6..4bb644fa 100644
--- a/src/windows/dcb.rs
+++ b/src/windows/dcb.rs
@@ -89,6 +89,7 @@ pub(crate) fn set_parity(dcb: &mut DCB, parity: Parity) {
 pub(crate) fn set_stop_bits(dcb: &mut DCB, stop_bits: StopBits) {
     dcb.StopBits = match stop_bits {
         StopBits::One => ONESTOPBIT,
+        StopBits::OnePointFive => ONE5STOPBITS,
         StopBits::Two => TWOSTOPBITS,
     };
 }