diff --git a/src/main.rs b/src/main.rs
index 812a776..b10a80a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -310,7 +310,12 @@ impl TerminalWindow {
     }
 
     fn sync_title(&self) {
-        self.window.set_title(self.active().title());
+        let title = self.active().title();
+        self.window.set_title(title);
+        #[cfg(target_os = "macos")]
+        if let Some(ns_view) = ns_view_ptr(&self.window) {
+            platform::set_tab_title(ns_view, title);
+        }
     }
 
     fn accept_ghost(&mut self) {
diff --git a/src/platform.rs b/src/platform.rs
index 5bb1286..e6999cf 100644
--- a/src/platform.rs
+++ b/src/platform.rs
@@ -214,3 +214,25 @@ pub fn select_prev_tab(ns_view: *mut std::ffi::c_void) {
         }
     }
 }
+
+/// Update the native macOS tab label for this window.
+/// `NSWindowTab.title` is separate from `NSWindow.title` and doesn't
+/// automatically follow it after the window is added to a tab group.
+#[cfg(target_os = "macos")]
+pub fn set_tab_title(ns_view: *mut std::ffi::c_void, title: &str) {
+    use objc2::{msg_send, runtime::AnyObject};
+    use std::os::raw::c_char;
+    unsafe {
+        let view: *mut AnyObject = ns_view as *mut AnyObject;
+        let win:  *mut AnyObject = msg_send![view, window];
+        if win.is_null() { return; }
+        let tab: *mut AnyObject = msg_send![win, tab];
+        if tab.is_null() { return; }
+        let ns_str: *mut AnyObject = msg_send![
+            objc2::class!(NSString),
+            stringWithUTF8String: title.as_ptr() as *const c_char
+        ];
+        if ns_str.is_null() { return; }
+        let _: () = msg_send![tab, setTitle: ns_str];
+    }
+}