diff --git a/src/serial.h b/src/serial.h
index 4b1e0f3..5a9d8ea 100644
--- a/src/serial.h
+++ b/src/serial.h
@@ -93,6 +93,8 @@ int serial_set_queue_size (serial_t *device, unsigned int input, unsigned int ou
 
 int serial_set_halfduplex (serial_t *device, int value);
 
+int serial_set_latency (serial_t *device, unsigned int milliseconds);
+
 int serial_read (serial_t *device, void* data, unsigned int size);
 int serial_write (serial_t *device, const void* data, unsigned int size);
 
diff --git a/src/serial_posix.c b/src/serial_posix.c
index 2748957..e365024 100644
--- a/src/serial_posix.c
+++ b/src/serial_posix.c
@@ -512,6 +512,45 @@ serial_set_halfduplex (serial_t *device, int value)
 	return 0;
 }
 
+int
+serial_set_latency (serial_t *device, unsigned int milliseconds)
+{
+	if (device == NULL)
+		return -1; // EINVAL (Invalid argument)
+
+#if defined(TIOCGSERIAL) && defined(TIOCSSERIAL)
+	// Get the current settings.
+	struct serial_struct ss;
+	if (ioctl (device->fd, TIOCGSERIAL, &ss) != 0 && NOPTY) {
+		SYSERROR (device->context, errno);
+		return -1;
+	}
+
+	// Set or clear the low latency flag.
+	if (milliseconds == 0) {
+		ss.flags |= ASYNC_LOW_LATENCY;
+	} else {
+		ss.flags &= ~ASYNC_LOW_LATENCY;
+	}
+
+	// Apply the new settings.
+	if (ioctl (device->fd, TIOCSSERIAL, &ss) != 0 && NOPTY) {
+		SYSERROR (device->context, errno);
+		return -1;
+	}
+#elif defined(IOSSDATALAT)
+	// Set the receive latency in microseconds. Serial drivers use this
+	// value to determine how often to dequeue characters received by
+	// the hardware. A value of zero restores the default value.
+	unsigned long usec = (milliseconds == 0 ? 1 : milliseconds * 1000);
+	if (ioctl (device->fd, IOSSDATALAT, &usec) != 0 && NOPTY) {
+		SYSERROR (device->context, errno);
+		return -1;
+	}
+#endif
+
+	return 0;
+}
 
 int
 serial_read (serial_t *device, void *data, unsigned int size)
diff --git a/src/serial_win32.c b/src/serial_win32.c
index 2afb54d..9d5572c 100644
--- a/src/serial_win32.c
+++ b/src/serial_win32.c
@@ -389,6 +389,15 @@ serial_set_halfduplex (serial_t *device, int value)
 }
 
 
+int
+serial_set_latency (serial_t *device, unsigned int milliseconds)
+{
+	if (device == NULL)
+		return -1; // ERROR_INVALID_PARAMETER (The parameter is incorrect)
+
+	return 0;
+}
+
 int
 serial_read (serial_t *device, void* data, unsigned int size)
 {