diff --git a/Cargo.toml b/Cargo.toml
index 4988fc7..90f1c9f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,13 +15,15 @@ keywords = ["which", "which-rs", "unix", "command"]
 [dependencies]
 either = "1.9.0"
 regex = { version = "1.10.2", optional = true }
-rustix = { version = "0.38.30", default-features = false, features = ["fs", "std"] }
 
 [target.'cfg(any(windows, unix, target_os = "redox"))'.dependencies]
 home = "0.5.9"
 
+[target.'cfg(any(unix, target_os = "wasi", target_os = "redox"))'.dependencies]
+rustix = { version = "0.38.30", default-features = false, features = ["fs", "std"] }
+
 [target.'cfg(windows)'.dependencies]
-windows-sys = { version = "0.52", features = ["Win32_Storage_FileSystem", "Win32_Foundation"] }
+winsafe = { version = "0.0.19", features = ["kernel"] }
 once_cell = "1"
 
 [dev-dependencies]
diff --git a/src/checker.rs b/src/checker.rs
index ec1485e..9668443 100644
--- a/src/checker.rs
+++ b/src/checker.rs
@@ -11,7 +11,7 @@ impl ExecutableChecker {
 }
 
 impl Checker for ExecutableChecker {
-    #[cfg(any(unix, target_os = "wasi"))]
+    #[cfg(any(unix, target_os = "wasi", target_os = "redox"))]
     fn is_valid(&self, path: &Path) -> bool {
         use rustix::fs as rfs;
         rfs::access(path, rfs::Access::EXEC_OK).is_ok()
@@ -53,18 +53,7 @@ impl Checker for ExistedChecker {
 
 #[cfg(target_os = "windows")]
 fn matches_arch(path: &Path) -> bool {
-    use std::os::windows::prelude::OsStrExt;
-
-    let os_str = path
-        .as_os_str()
-        .encode_wide()
-        .chain(std::iter::once(0))
-        .collect::<Vec<u16>>();
-    let mut out = 0;
-    let is_executable = unsafe {
-        windows_sys::Win32::Storage::FileSystem::GetBinaryTypeW(os_str.as_ptr(), &mut out)
-    };
-    is_executable != 0
+    winsafe::GetBinaryType(&path.display().to_string()).is_ok()
 }
 
 pub struct CompositeChecker {
diff --git a/src/lib.rs b/src/lib.rs
index c8f0be8..8490cb6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -14,6 +14,8 @@
 //!
 //! ```
 
+#![forbid(unsafe_code)]
+
 mod checker;
 mod error;
 mod finder;