diff --git a/Cargo.toml b/Cargo.toml
index 70aaa06..9d7c0b5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,13 +15,13 @@ readme = "README.md"
 rust-version = "1.69.0"
 
 [target.'cfg(unix)'.dependencies]
-nix = { version = "0.28", default-features = false, features = ["fs", "signal"]}
+nix = { version = "0.29", default-features = false, features = ["fs", "signal"]}
 
 [target.'cfg(windows)'.dependencies]
-windows-sys = { version = "0.52", features = ["Win32_Foundation", "Win32_System_Threading", "Win32_Security", "Win32_System_Console"] }
+windows-sys = { version = "0.59", features = ["Win32_Foundation", "Win32_System_Threading", "Win32_Security", "Win32_System_Console"] }
 
 [target.'cfg(windows)'.dev-dependencies]
-windows-sys = { version = "0.52", features = ["Win32_Storage_FileSystem", "Win32_Foundation", "Win32_System_IO", "Win32_System_Console"] }
+windows-sys = { version = "0.59", features = ["Win32_Storage_FileSystem", "Win32_Foundation", "Win32_System_IO", "Win32_System_Console"] }
 
 [features]
 termination = []
diff --git a/src/platform/windows/mod.rs b/src/platform/windows/mod.rs
index 5f701f7..187b156 100644
--- a/src/platform/windows/mod.rs
+++ b/src/platform/windows/mod.rs
@@ -43,7 +43,7 @@ unsafe extern "system" fn os_handler(_: u32) -> BOOL {
 #[inline]
 pub unsafe fn init_os_handler(_overwrite: bool) -> Result<(), Error> {
     SEMAPHORE = CreateSemaphoreA(ptr::null_mut(), 0, MAX_SEM_COUNT, ptr::null());
-    if SEMAPHORE == 0 {
+    if SEMAPHORE.is_null() {
         return Err(io::Error::last_os_error());
     }
 
diff --git a/tests/main/harness.rs b/tests/main/harness.rs
index 8ba5efc..24113f8 100644
--- a/tests/main/harness.rs
+++ b/tests/main/harness.rs
@@ -88,7 +88,7 @@ pub mod platform {
         fn new() -> io::Result<Output> {
             unsafe {
                 let stdout = GetStdHandle(STD_OUTPUT_HANDLE);
-                if stdout == 0 || stdout == INVALID_HANDLE_VALUE {
+                if stdout.is_null() || stdout == INVALID_HANDLE_VALUE {
                     return Err(io::Error::last_os_error());
                 }
 
@@ -139,7 +139,7 @@ pub mod platform {
             0 as HANDLE,
         );
 
-        if stdout == 0 || stdout == INVALID_HANDLE_VALUE {
+        if stdout.is_null() || stdout == INVALID_HANDLE_VALUE {
             Err(io::Error::last_os_error())
         } else {
             Ok(stdout)