diff --git a/CHANGELOG.md b/CHANGELOG.md
index 90179db..e03bc55 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,9 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - Add INPUTMUX and PINT peripherals
 - Add example using PINT + INPUTMUX to make an external interrupt on a pin
 
+## [v0.2.1] - 2021-05-02
+Fix the "lap" naming
+
 ## [v0.2.0] - 2021-05-02
 Bump lpc55-pac and cipher
 Replace homegrown "time" with embedded-time
diff --git a/Cargo.toml b/Cargo.toml
index fa461c8..e00c369 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "lpc55-hal"
-version = "0.2.0"
+version = "0.2.1"
 edition = "2018"
 description   = "Hardware Abstraction Layer (HAL) for the NXP LPC55S6x ARM Cortex-33 microcontrollers"
 repository = "https://github.com/nickray/lpc55-hal"
diff --git a/examples/ctimer.rs b/examples/ctimer.rs
index 5548930..83039b7 100644
--- a/examples/ctimer.rs
+++ b/examples/ctimer.rs
@@ -11,7 +11,7 @@ use cortex_m_semihosting::heprintln;
 use lpc55_hal as hal;
 use hal::prelude::*;
 
-use hal::drivers::timer::Lap;
+use hal::drivers::timer::Elapsed;
 
 #[macro_use(block)]
 extern crate nb;
@@ -41,7 +41,7 @@ fn main() -> ! {
     loop {
         cdriver.start(1_000_000.microseconds());
         dbg!(c * 1_000_000);
-        dbg!(cdriver.lap().0);
+        dbg!(cdriver.elapsed().0);
         c += 1;
         block!(cdriver.wait()).unwrap(); // blocks for 1 second
     }
diff --git a/examples/measure_frequency.rs b/examples/measure_frequency.rs
index e00815b..e21a9b6 100644
--- a/examples/measure_frequency.rs
+++ b/examples/measure_frequency.rs
@@ -14,7 +14,7 @@ use lpc55_hal as hal;
 use hal::{
     drivers::{
         Timer,
-        timer::Lap,
+        timer::Elapsed,
     },
     prelude::*,
 };
@@ -54,7 +54,7 @@ fn main() -> ! {
 
         delay_cycles(10_000_000);
 
-        let us = timer.lap().0;
+        let us = timer.elapsed().0;
         timer.cancel().ok();
 
         heprintln!("{} MHz", 10_000_000 / us).ok();
diff --git a/src/drivers/timer.rs b/src/drivers/timer.rs
index 6da581f..b381367 100644
--- a/src/drivers/timer.rs
+++ b/src/drivers/timer.rs
@@ -12,8 +12,8 @@ use crate::{
 
 /// Return the current time elapsed for the timer.
 /// If the timer has not started or stopped, this unit may not be accurate.
-pub trait Lap <Unit>{
-    fn lap(&self) -> Unit;
+pub trait Elapsed: timer::CountDown {
+    fn elapsed(&self) -> Self::Time;
 }
 
 pub struct Timer<TIMER>
@@ -40,9 +40,9 @@ where TIMER: Ctimer<init_state::Enabled> {
 
 type TimeUnits = Microseconds;
 
-impl <TIMER> Lap<TimeUnits> for Timer<TIMER>
+impl <TIMER> Elapsed for Timer<TIMER>
 where TIMER: Ctimer<init_state::Enabled> {
-    fn lap(&self) -> TimeUnits{
+    fn elapsed(&self) -> Microseconds {
         Microseconds(self.timer.tc.read().bits())
     }
 }
diff --git a/src/drivers/touch.rs b/src/drivers/touch.rs
index 8d56876..dc22b70 100644
--- a/src/drivers/touch.rs
+++ b/src/drivers/touch.rs
@@ -17,7 +17,7 @@ use crate::{
         Pin,
         pins,
         timer,
-        timer::Lap,
+        timer::Elapsed,
     },
     peripherals::{
         ctimer,
@@ -416,7 +416,7 @@ pub fn profile_touch_sensing(touch_sensor: &mut TouchSensor<impl PinId, impl Pin
                             times: &mut [u32],
                             ){
 
-    let start = delay_timer.lap().0;
+    let start = delay_timer.elapsed().0;
     let results = touch_sensor.get_results();
 
     delay_timer.start(300_000.microseconds());
@@ -426,7 +426,7 @@ pub fn profile_touch_sensing(touch_sensor: &mut TouchSensor<impl PinId, impl Pin
         for i in 0 .. 125 {
             if results[i] != 0 {
                 if times[i] == 0 {
-                    times[i] = delay_timer.lap().0 - start;
+                    times[i] = delay_timer.elapsed().0 - start;
                     copy[i] = results[i];
                 }
             }