diff --git a/Cargo.lock b/Cargo.lock
index 64d4bd4a..f8f37211 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -490,7 +490,7 @@ dependencies = [
  "tempfile",
  "typenum",
  "url",
- "windows-sys 0.52.0",
+ "windows-sys 0.59.0",
  "xz2",
  "zip",
  "zstd",
diff --git a/Cargo.toml b/Cargo.toml
index 5fefdb70..89c13789 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -119,7 +119,7 @@ version = "0.4"
 optional = true
 
 [target.'cfg(windows)'.dependencies.windows-sys]
-version = "0.52"
+version = "0.59"
 features = ["Win32_Foundation"]
 
 [target.'cfg(not(windows))'.dependencies.xz2]
diff --git a/src/main.rs b/src/main.rs
index 8d19727b..91a8056d 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1944,7 +1944,7 @@ fn do_self_update(
         #[cfg(windows)]
         {
             use Win32::Foundation::HANDLE;
-            let mut handle: HANDLE = 0;
+            let mut handle: HANDLE = std::ptr::null_mut();
             let curproc = unsafe { Win32::System::Threading::GetCurrentProcess() };
             if unsafe {
                 Win32::Foundation::DuplicateHandle(