diff --git a/Cargo.lock b/Cargo.lock
index 98c7bba..3ccb986 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -588,9 +588,9 @@ dependencies = [
 
 [[package]]
 name = "dispatch"
-version = "0.1.4"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "04e93ca78226c51902d7aa8c12c988338aadd9e85ed9c6be8aaac39192ff3605"
+checksum = "bd0c93bb4b0c6d9b77f4435b0ae98c24d17f1c45b2ff844c6151a07256ca923b"
 
 [[package]]
 name = "dlib"
@@ -2254,8 +2254,8 @@ dependencies = [
 
 [[package]]
 name = "skulpin"
-version = "0.5.1"
-source = "git+https://github.com/aclysma/skulpin#c0b194833f97b839bd44a30fc2f17851b14e1016"
+version = "0.6.0"
+source = "git+https://github.com/aclysma/skulpin?branch=winit_20#ca72c710628c7ff6a86de5c9997dd7443049dc47"
 dependencies = [
  "ash",
  "cocoa",
@@ -2649,13 +2649,11 @@ checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
 [[package]]
 name = "winit"
-version = "0.20.0-alpha6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bfa4308ca09f50e2f4688c631c36879521bffc39b949238b288ffd932864acbc"
+version = "0.20.0"
+source = "git+https://github.com/rust-windowing/winit?rev=e295104#e2951041990983eb100dde664607de5330e50b13"
 dependencies = [
  "android_glue",
  "bitflags",
- "calloop",
  "cocoa",
  "core-foundation",
  "core-graphics",
@@ -2665,6 +2663,8 @@ dependencies = [
  "lazy_static",
  "libc",
  "log",
+ "mio",
+ "mio-extras",
  "objc",
  "parking_lot",
  "percent-encoding",
diff --git a/Cargo.toml b/Cargo.toml
index 5e08caa..f5a16a4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,7 @@ euclid = "0.20.7"
 font-kit = "0.4.0"
 skribo = { git = "https://github.com/linebender/skribo" }
 lru = "0.4.3"
-skulpin = { git = "https://github.com/aclysma/skulpin" }
+skulpin = { git = "https://github.com/aclysma/skulpin", branch="winit_20" }
 derive-new = "0.5"
 env_logger = "0.7.1"
 rmpv = "0.4.2"
diff --git a/src/window.rs b/src/window.rs
index 97ebb71..3f6dd04 100644
--- a/src/window.rs
+++ b/src/window.rs
@@ -4,7 +4,7 @@ use std::time::{Duration, Instant};
 use image::{load_from_memory, GenericImageView, Pixel};
 use skulpin::{CoordinateSystem, RendererBuilder, PresentMode};
 use skulpin::skia_safe::icu;
-use skulpin::winit::dpi::LogicalSize;
+use skulpin::winit::dpi::{LogicalSize, PhysicalSize};
 use skulpin::winit::event::{ElementState, Event, MouseScrollDelta, StartCause, WindowEvent};
 use skulpin::winit::event_loop::{ControlFlow, EventLoop};
 use skulpin::winit::window::{Icon, WindowBuilder};
@@ -19,10 +19,10 @@ use crate::INITIAL_DIMENSIONS;
 #[folder = "assets/"]
 struct Asset;
 
-fn handle_new_grid_size(new_size: LogicalSize, renderer: &Renderer) {
-    if new_size.width > 0.0 && new_size.height > 0.0 {
-        let new_width = ((new_size.width + 1.0) as f32 / renderer.font_width) as u64;
-        let new_height = ((new_size.height + 1.0) as f32 / renderer.font_height) as u64;
+fn handle_new_grid_size(new_size: PhysicalSize<u32>, renderer: &Renderer) {
+    if new_size.width > 0 && new_size.height > 0 {
+        let new_width = ((new_size.width + 1) as f32 / renderer.font_width) as u64;
+        let new_height = ((new_size.height + 1) as f32 / renderer.font_height) as u64;
         // Add 1 here to make sure resizing doesn't change the grid size on startup
         BRIDGE.queue_command(UiCommand::Resize { width: new_width as i64, height: new_height as i64 });
     }