diff --git a/.changes/send-sync.md b/.changes/send-sync.md
new file mode 100644
index 0000000..f8f264c
--- /dev/null
+++ b/.changes/send-sync.md
@@ -0,0 +1,5 @@
+---
+"global-hotkey": "minor"
+---
+
+Removed `Sync` and `Send` implementation for `GlobalHotKeyManager`
diff --git a/.changes/windows-sys-0.59.md b/.changes/windows-sys-0.59.md
new file mode 100644
index 0000000..69e8611
--- /dev/null
+++ b/.changes/windows-sys-0.59.md
@@ -0,0 +1,5 @@
+---
+"global-hotkey": "patch"
+---
+
+Update `windows-sys` crate to `0.59`
diff --git a/Cargo.toml b/Cargo.toml
index ecc40ac..1a63dc4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,7 +26,7 @@ cocoa = "0.25"
 objc = "0.2"
 
 [target."cfg(target_os = \"windows\")".dependencies.windows-sys]
-version = "0.52"
+version = "0.59"
 features = [
   "Win32_UI_WindowsAndMessaging",
   "Win32_Foundation",
diff --git a/src/lib.rs b/src/lib.rs
index aba71b9..abcfde0 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -161,15 +161,3 @@ impl GlobalHotKeyManager {
         Ok(())
     }
 }
-
-#[cfg(test)]
-mod tests {
-    fn assert_send<T: Send>() {}
-    fn assert_sync<T: Sync>() {}
-
-    #[test]
-    fn is_send_sync() {
-        assert_send::<super::GlobalHotKeyManager>();
-        assert_sync::<super::GlobalHotKeyManager>();
-    }
-}
diff --git a/src/platform_impl/windows/mod.rs b/src/platform_impl/windows/mod.rs
index 83f59a1..137fab4 100644
--- a/src/platform_impl/windows/mod.rs
+++ b/src/platform_impl/windows/mod.rs
@@ -10,7 +10,7 @@ use windows_sys::Win32::{
     UI::{
         Input::KeyboardAndMouse::*,
         WindowsAndMessaging::{
-            CreateWindowExW, DefWindowProcW, DestroyWindow, RegisterClassW, CW_USEDEFAULT, HMENU,
+            CreateWindowExW, DefWindowProcW, DestroyWindow, RegisterClassW, CW_USEDEFAULT,
             WM_HOTKEY, WNDCLASSW, WS_EX_LAYERED, WS_EX_NOACTIVATE, WS_EX_TOOLWINDOW,
             WS_EX_TRANSPARENT, WS_OVERLAPPED,
         },
@@ -20,7 +20,7 @@ use windows_sys::Win32::{
 use crate::{hotkey::HotKey, GlobalHotKeyEvent};
 
 pub struct GlobalHotKeyManager {
-    hwnd: isize,
+    hwnd: HWND,
 }
 
 impl Drop for GlobalHotKeyManager {
@@ -61,12 +61,12 @@ impl GlobalHotKeyManager {
                 0,
                 CW_USEDEFAULT,
                 0,
-                HWND::default(),
-                HMENU::default(),
+                std::ptr::null_mut(),
+                std::ptr::null_mut(),
                 hinstance,
                 std::ptr::null_mut(),
             );
-            if hwnd == 0 {
+            if hwnd.is_null() {
                 return Err(crate::Error::OsError(std::io::Error::last_os_error()));
             }