diff --git a/CHANGELOG.md b/CHANGELOG.md
index 98c0481625..2d5ef951e4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,7 +8,7 @@
 
 ### Backends
 
-- **[Breaking]** WinitBackend: Upgrade to winit 0.17
+- **[Breaking]** WinitBackend: Upgrade to winit 0.18
 
 ### Clients & Protocol
 
diff --git a/Cargo.toml b/Cargo.toml
index 3e6d8c7caa..6407095611 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,8 +18,8 @@ tempfile = "2.1.5"
 slog = "2.1.1"
 slog-stdlog = "3.0.2"
 libloading = "0.4.0"
-wayland-client = { version = "0.20.5", optional = true }
-winit = { version = "0.17.0", optional = true }
+wayland-client = { version = "0.21.1", features = ["egl"], optional = true }
+winit = { version = "0.18.0", optional = true }
 drm = { version = "^0.3.1", optional = true }
 gbm = { version = "^0.4.0", optional = true, default-features = false, features = ["drm-support"] }
 glium = { version = "0.19.0", optional = true, default-features = false }
diff --git a/src/backend/drm/mod.rs b/src/backend/drm/mod.rs
index a3ac9f16cd..39ec1ccc7c 100644
--- a/src/backend/drm/mod.rs
+++ b/src/backend/drm/mod.rs
@@ -245,7 +245,8 @@ use std::{
 use wayland_server::{
     calloop::{
         generic::{EventedRawFd, Generic},
-        LoopHandle, Ready, Source,
+        mio::Ready,
+        LoopHandle, Source,
     },
     Display,
 };
@@ -558,7 +559,7 @@ where
         Ok(source) => Ok((source, device)),
         Err(e) => {
             let device = Rc::try_unwrap(device).unwrap_or_else(|_| unreachable!());
-            Err((e, device.into_inner()))
+            Err((e.into(), device.into_inner()))
         }
     }
 }
diff --git a/src/backend/libinput.rs b/src/backend/libinput.rs
index 28a05c3125..6a5407eb44 100644
--- a/src/backend/libinput.rs
+++ b/src/backend/libinput.rs
@@ -18,7 +18,8 @@ use std::{
 
 use wayland_server::calloop::{
     generic::{EventedRawFd, Generic},
-    LoopHandle, Ready, Source,
+    mio::Ready,
+    LoopHandle, Source,
 };
 
 // No idea if this is the same across unix platforms
@@ -612,6 +613,6 @@ pub fn libinput_bind<Data: 'static>(
             let backend = Rc::try_unwrap(fail_backend)
                 .unwrap_or_else(|_| unreachable!())
                 .into_inner();
-            (e, backend)
+            (e.into(), backend)
         })
 }
diff --git a/src/backend/session/dbus/logind.rs b/src/backend/session/dbus/logind.rs
index ed10cc2427..147abd0519 100644
--- a/src/backend/session/dbus/logind.rs
+++ b/src/backend/session/dbus/logind.rs
@@ -51,7 +51,8 @@ use systemd::login;
 
 use wayland_server::calloop::{
     generic::{Event, EventedRawFd, Generic},
-    LoopHandle, Ready, Source,
+    mio::Ready,
+    InsertError, LoopHandle, Source,
 };
 
 struct LogindSessionImpl {
@@ -459,10 +460,10 @@ pub fn logind_session_bind<Data: 'static>(
                 let mut notifier = notifier.clone();
                 move |evt, _| notifier.event(evt)
             })
-        }).collect::<::std::result::Result<Vec<Source<Generic<EventedRawFd>>>, IoError>>()
+        }).collect::<::std::result::Result<Vec<Source<Generic<EventedRawFd>>>, InsertError<Generic<EventedRawFd>>>>()
         .map_err(|err| {
             (
-                err,
+                err.into(),
                 LogindSessionNotifier {
                     internal: internal_for_error,
                 },
diff --git a/src/backend/session/direct.rs b/src/backend/session/direct.rs
index fc17c456a6..f795b44c78 100644
--- a/src/backend/session/direct.rs
+++ b/src/backend/session/direct.rs
@@ -444,7 +444,7 @@ pub fn direct_session_bind<Data: 'static>(
             let notifier = Rc::try_unwrap(fail_notifier)
                 .unwrap_or_else(|_| unreachable!())
                 .into_inner();
-            (e, notifier)
+            (e.into(), notifier)
         })?;
     Ok(BoundDirectSession { source, notifier })
 }
diff --git a/src/backend/udev.rs b/src/backend/udev.rs
index 1b9890c8ca..4055697e3c 100644
--- a/src/backend/udev.rs
+++ b/src/backend/udev.rs
@@ -29,7 +29,8 @@ use udev::{Context, Enumerator, Event, EventType, MonitorBuilder, MonitorSocket,
 
 use wayland_server::calloop::{
     generic::{EventedRawFd, Generic},
-    LoopHandle, Ready, Source,
+    mio::Ready,
+    LoopHandle, Source,
 };
 
 /// Udev's `DrmDevice` type based on the underlying session
@@ -280,9 +281,10 @@ where
     let handle = udev.handle.clone();
     let mut source = Generic::from_raw_fd(fd);
     source.set_interest(Ready::readable());
-    handle.insert_source(source, move |_, _| {
-        udev.process_events();
-    })
+    handle
+        .insert_source(source, move |_, _| {
+            udev.process_events();
+        }).map_err(Into::into)
 }
 
 impl<H, S, T, Data> UdevBackend<H, S, T, Data>