diff --git a/src/Rust/src/commands/apply.rs b/src/Rust/src/commands/apply.rs
index f202c937..28db4b7e 100644
--- a/src/Rust/src/commands/apply.rs
+++ b/src/Rust/src/commands/apply.rs
@@ -8,14 +8,20 @@ use glob::glob;
 use runas::Command as RunAsCommand;
 use std::path::PathBuf;
 
-pub fn apply<'a>(restart: bool, wait_for_parent: bool, package: Option<&PathBuf>, exe_args: Option<Vec<&str>>, noelevate: bool) -> Result<()> {
+pub fn apply<'a>(
+    root_path: &PathBuf,
+    app: &Manifest,
+    restart: bool,
+    wait_for_parent: bool,
+    package: Option<&PathBuf>,
+    exe_args: Option<Vec<&str>>,
+    noelevate: bool,
+) -> Result<()> {
     if wait_for_parent {
         let _ = shared::wait_for_parent_to_exit(60_000); // 1 minute
     }
 
-    let (root_path, app) = shared::detect_current_manifest()?;
-
-    if let Err(e) = apply_package(package, &app, &root_path, noelevate, restart, exe_args.clone()) {
+    if let Err(e) = apply_package(&root_path, &app, restart, package, exe_args.clone(), noelevate) {
         error!("Error applying package: {}", e);
         if !restart {
             return Err(e);
@@ -30,7 +36,14 @@ pub fn apply<'a>(restart: bool, wait_for_parent: bool, package: Option<&PathBuf>
     Ok(())
 }
 
-fn apply_package<'a>(package: Option<&PathBuf>, app: &Manifest, root_path: &PathBuf, noelevate: bool, restart: bool, exe_args: Option<Vec<&str>>) -> Result<()> {
+fn apply_package<'a>(
+    root_path: &PathBuf,
+    app: &Manifest,
+    restart: bool,
+    package: Option<&PathBuf>,
+    exe_args: Option<Vec<&str>>,
+    noelevate: bool,
+) -> Result<()> {
     let mut package_manifest: Option<Manifest> = None;
     let mut package_bundle: Option<BundleInfo<'a>> = None;
 
diff --git a/src/Rust/src/update.rs b/src/Rust/src/update.rs
index f9d49925..48755ad6 100644
--- a/src/Rust/src/update.rs
+++ b/src/Rust/src/update.rs
@@ -135,7 +135,8 @@ fn apply(matches: &ArgMatches) -> Result<()> {
     info!("    Exe Args: {:?}", exe_args);
     info!("    No Elevate: {}", noelevate);
 
-    commands::apply(restart, wait_for_parent, package, exe_args, noelevate)
+    let (root_path, app) = shared::detect_current_manifest()?;
+    commands::apply(&root_path, &app, restart, wait_for_parent, package, exe_args, noelevate)
 }
 
 #[cfg(target_os = "windows")]
diff --git a/src/Rust/src/windows/util.rs b/src/Rust/src/windows/util.rs
index 753604a2..44a2d596 100644
--- a/src/Rust/src/windows/util.rs
+++ b/src/Rust/src/windows/util.rs
@@ -34,14 +34,26 @@ pub fn run_hook(app: &shared::bundle::Manifest, root_path: &PathBuf, hook_name:
     let _ = shared::force_stop_package(&root_path);
 }
 
-pub fn create_global_mutex(app: &shared::bundle::Manifest) -> Result<Foundation::HANDLE> {
+pub struct MutexDropGuard {
+    mutex: Foundation::HANDLE,
+}
+
+impl Drop for MutexDropGuard {
+    fn drop(&mut self) {
+        unsafe {
+            Foundation::CloseHandle(self.mutex).ok();
+        }
+    }
+}
+
+pub fn create_global_mutex(app: &shared::bundle::Manifest) -> Result<MutexDropGuard> {
     let mutex_name = format!("velopack-{}", &app.id);
     info!("Attempting to open global system mutex: '{}'", &mutex_name);
     let encoded = mutex_name.encode_utf16().chain([0u16]).collect::<Vec<u16>>();
     let pw = PCWSTR(encoded.as_ptr());
     let mutex = unsafe { CreateMutexW(None, true, pw) }?;
     match unsafe { GetLastError() } {
-        Ok(_) => Ok(mutex),
+        Ok(_) => Ok(MutexDropGuard { mutex }),
         Err(err) => {
             if err == Foundation::ERROR_ALREADY_EXISTS.into() {
                 bail!("Another installer or updater for this application is running, quit that process and try again.");
@@ -387,4 +399,4 @@ fn test_authenticode() {
     assert!(verify_authenticode_against_powershell(r"C:\Users\Caelan\AppData\Local\Programs\Microsoft VS Code\Code.exe"));
     assert!(!verify_authenticode_against_powershell(r"C:\Users\Caelan\AppData\Local\Clowd\Update.exe"));
     assert!(!verify_authenticode_against_powershell(r"C:\Users\Caelan\.cargo\bin\cargo.exe"));
-}
\ No newline at end of file
+}
diff --git a/src/Rust/tests/commands.rs b/src/Rust/tests/commands.rs
index cdb1c62f..f85149db 100644
--- a/src/Rust/tests/commands.rs
+++ b/src/Rust/tests/commands.rs
@@ -9,8 +9,7 @@ use winsafe::{self as w, co};
 
 #[cfg(target_os = "windows")]
 #[test]
-pub fn test_install_uninstall() {
-    logging::trace_logger();
+pub fn test_install_apply_uninstall() {
     dialogs::set_silent(true);
     let fixtures = find_fixtures();
 
@@ -36,6 +35,14 @@ pub fn test_install_uninstall() {
 
     let (root_dir, app) = shared::detect_manifest_from_update_path(&tmp_buf.join("Update.exe")).unwrap();
     assert_eq!(app_id, app.id);
+    assert!(semver::Version::parse("1.0.11").unwrap() == app.version);
+
+    let pkg_name_apply = "AvaloniaCrossPlat-1.0.15-win-full.nupkg";
+    let nupkg_apply = fixtures.join(pkg_name_apply);
+    commands::apply(&root_dir, &app, false, false, Some(&nupkg_apply), None, true).unwrap();
+
+    let (root_dir, app) = shared::detect_manifest_from_update_path(&tmp_buf.join("Update.exe")).unwrap();
+    assert!(semver::Version::parse("1.0.15").unwrap() == app.version);
 
     commands::uninstall(&root_dir, &app, false).unwrap();
     assert!(!tmp_buf.join("current").exists());
diff --git a/test/fixtures/AvaloniaCrossPlat-1.0.15-win-full.nupkg b/test/fixtures/AvaloniaCrossPlat-1.0.15-win-full.nupkg
new file mode 100644
index 00000000..3d5217d0
Binary files /dev/null and b/test/fixtures/AvaloniaCrossPlat-1.0.15-win-full.nupkg differ