diff --git a/doc/src/zmqsource.rs b/doc/src/zmqsource.rs
index cb57af79..65495d99 100644
--- a/doc/src/zmqsource.rs
+++ b/doc/src/zmqsource.rs
@@ -40,7 +40,6 @@ use anyhow::Context;
 /// messages over the same writeable ZeroMQ socket (usually PUB or PUSH).
 /// Messages should be sent over the Calloop MPSC channel sending end. This end
 /// can be cloned and used by multiple senders.
-
 pub struct ZeroMQSource<T>
 where
     T: IntoIterator,
diff --git a/src/io.rs b/src/io.rs
index 24f76410..6157c191 100644
--- a/src/io.rs
+++ b/src/io.rs
@@ -51,7 +51,7 @@ pub struct Async<'l, F: AsFd> {
     was_nonblocking: bool,
 }
 
-impl<'l, F: AsFd + std::fmt::Debug> std::fmt::Debug for Async<'l, F> {
+impl<F: AsFd + std::fmt::Debug> std::fmt::Debug for Async<'_, F> {
     #[cfg_attr(feature = "nightly_coverage", coverage(off))]
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         f.debug_struct("Async").field("fd", &self.fd).finish()
@@ -146,7 +146,7 @@ pub struct Readable<'s, 'l, F: AsFd> {
     io: &'s mut Async<'l, F>,
 }
 
-impl<'s, 'l, F: AsFd> std::future::Future for Readable<'s, 'l, F> {
+impl<F: AsFd> std::future::Future for Readable<'_, '_, F> {
     type Output = ();
     fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> TaskPoll<()> {
         let io = &mut self.as_mut().io;
@@ -166,7 +166,7 @@ pub struct Writable<'s, 'l, F: AsFd> {
     io: &'s mut Async<'l, F>,
 }
 
-impl<'s, 'l, F: AsFd> std::future::Future for Writable<'s, 'l, F> {
+impl<F: AsFd> std::future::Future for Writable<'_, '_, F> {
     type Output = ();
     fn poll(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> TaskPoll<()> {
         let io = &mut self.as_mut().io;
@@ -180,7 +180,7 @@ impl<'s, 'l, F: AsFd> std::future::Future for Writable<'s, 'l, F> {
     }
 }
 
-impl<'l, F: AsFd> Drop for Async<'l, F> {
+impl<F: AsFd> Drop for Async<'_, F> {
     fn drop(&mut self) {
         self.inner.kill(&self.dispatcher);
         // restore flags
@@ -191,7 +191,7 @@ impl<'l, F: AsFd> Drop for Async<'l, F> {
     }
 }
 
-impl<'l, F: AsFd> Unpin for Async<'l, F> {}
+impl<F: AsFd> Unpin for Async<'_, F> {}
 
 trait IoLoopInner {
     unsafe fn register(&self, dispatcher: &RefCell<IoDispatcher>) -> crate::Result<()>;
@@ -199,7 +199,7 @@ trait IoLoopInner {
     fn kill(&self, dispatcher: &RefCell<IoDispatcher>);
 }
 
-impl<'l, Data> IoLoopInner for LoopInner<'l, Data> {
+impl<Data> IoLoopInner for LoopInner<'_, Data> {
     unsafe fn register(&self, dispatcher: &RefCell<IoDispatcher>) -> crate::Result<()> {
         let disp = dispatcher.borrow();
         self.poll.borrow_mut().register(
@@ -306,7 +306,7 @@ impl<Data> EventDispatcher<Data> for RefCell<IoDispatcher> {
 
 #[cfg(feature = "futures-io")]
 #[cfg_attr(docsrs, doc(cfg(feature = "futures-io")))]
-impl<'l, F: AsFd + std::io::Read> AsyncRead for Async<'l, F> {
+impl<F: AsFd + std::io::Read> AsyncRead for Async<'_, F> {
     fn poll_read(
         mut self: Pin<&mut Self>,
         cx: &mut Context<'_>,
@@ -336,7 +336,7 @@ impl<'l, F: AsFd + std::io::Read> AsyncRead for Async<'l, F> {
 
 #[cfg(feature = "futures-io")]
 #[cfg_attr(docsrs, doc(cfg(feature = "futures-io")))]
-impl<'l, F: AsFd + std::io::Write> AsyncWrite for Async<'l, F> {
+impl<F: AsFd + std::io::Write> AsyncWrite for Async<'_, F> {
     fn poll_write(
         mut self: Pin<&mut Self>,
         cx: &mut Context<'_>,
diff --git a/src/loop_logic.rs b/src/loop_logic.rs
index a1c5ebaa..cc889ff8 100644
--- a/src/loop_logic.rs
+++ b/src/loop_logic.rs
@@ -66,14 +66,14 @@ pub struct LoopHandle<'l, Data> {
     inner: Rc<LoopInner<'l, Data>>,
 }
 
-impl<'l, Data> std::fmt::Debug for LoopHandle<'l, Data> {
+impl<Data> std::fmt::Debug for LoopHandle<'_, Data> {
     #[cfg_attr(feature = "nightly_coverage", coverage(off))]
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         f.write_str("LoopHandle { ... }")
     }
 }
 
-impl<'l, Data> Clone for LoopHandle<'l, Data> {
+impl<Data> Clone for LoopHandle<'_, Data> {
     #[cfg_attr(feature = "nightly_coverage", coverage(off))]
     fn clone(&self) -> Self {
         LoopHandle {
@@ -302,7 +302,7 @@ pub struct EventLoop<'l, Data> {
     synthetic_events: Vec<PollEvent>,
 }
 
-impl<'l, Data> std::fmt::Debug for EventLoop<'l, Data> {
+impl<Data> std::fmt::Debug for EventLoop<'_, Data> {
     #[cfg_attr(feature = "nightly_coverage", coverage(off))]
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         f.write_str("EventLoop { ... }")
@@ -661,7 +661,7 @@ impl<'l, Data> EventLoop<'l, Data> {
 }
 
 #[cfg(unix)]
-impl<'l, Data> AsRawFd for EventLoop<'l, Data> {
+impl<Data> AsRawFd for EventLoop<'_, Data> {
     /// Get the underlying raw-fd of the poller.
     ///
     /// This could be used to create [`Generic`] source out of the current loop
@@ -675,7 +675,7 @@ impl<'l, Data> AsRawFd for EventLoop<'l, Data> {
 }
 
 #[cfg(unix)]
-impl<'l, Data> AsFd for EventLoop<'l, Data> {
+impl<Data> AsFd for EventLoop<'_, Data> {
     /// Get the underlying fd of the poller.
     ///
     /// This could be used to create [`Generic`] source out of the current loop
@@ -714,7 +714,7 @@ pub struct EventIterator<'a> {
     registration_token: RegistrationToken,
 }
 
-impl<'a> Iterator for EventIterator<'a> {
+impl Iterator for EventIterator<'_> {
     type Item = (Readiness, Token);
 
     fn next(&mut self) -> Option<Self::Item> {
diff --git a/src/sources/mod.rs b/src/sources/mod.rs
index 58f59b73..489d8084 100644
--- a/src/sources/mod.rs
+++ b/src/sources/mod.rs
@@ -483,7 +483,7 @@ where
 /// Use `into_source_inner` to get the event source back.
 pub struct Dispatcher<'a, S, Data>(Rc<dyn ErasedDispatcher<'a, S, Data> + 'a>);
 
-impl<'a, S, Data> std::fmt::Debug for Dispatcher<'a, S, Data> {
+impl<S, Data> std::fmt::Debug for Dispatcher<'_, S, Data> {
     #[cfg_attr(feature = "nightly_coverage", coverage(off))]
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         f.write_str("Dispatcher { ... }")
@@ -560,14 +560,14 @@ pub struct Idle<'i> {
     pub(crate) callback: Rc<RefCell<dyn CancellableIdle + 'i>>,
 }
 
-impl<'i> std::fmt::Debug for Idle<'i> {
+impl std::fmt::Debug for Idle<'_> {
     #[cfg_attr(feature = "nightly_coverage", coverage(off))]
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         f.write_str("Idle { ... }")
     }
 }
 
-impl<'i> Idle<'i> {
+impl Idle<'_> {
     /// Cancel the idle callback if it was not already run
     pub fn cancel(self) {
         self.callback.borrow_mut().cancel();
diff --git a/src/sources/transient.rs b/src/sources/transient.rs
index 72d3154f..107af756 100644
--- a/src/sources/transient.rs
+++ b/src/sources/transient.rs
@@ -387,13 +387,13 @@ mod tests {
             ping: PingSource,
         }
 
-        impl<'a> Drop for TestSource<'a> {
+        impl Drop for TestSource<'_> {
             fn drop(&mut self) {
                 self.dropped.store(true, Ordering::Relaxed)
             }
         }
 
-        impl<'a> crate::EventSource for TestSource<'a> {
+        impl crate::EventSource for TestSource<'_> {
             type Event = ();
             type Metadata = ();
             type Ret = ();