diff --git a/Cargo.lock b/Cargo.lock
index f1cc659e..3dba1d41 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -512,6 +512,26 @@ dependencies = [
  "windows-sys 0.52.0",
 ]
 
+[[package]]
+name = "git-version"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ad568aa3db0fcbc81f2f116137f263d7304f512a1209b35b85150d3ef88ad19"
+dependencies = [
+ "git-version-macro",
+]
+
+[[package]]
+name = "git-version-macro"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "53010ccb100b96a67bc32c0175f0ed1426b31b655d562898e57325f81c023ac0"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.66",
+]
+
 [[package]]
 name = "glib"
 version = "0.19.7"
@@ -965,6 +985,7 @@ dependencies = [
  "futures-channel",
  "futures-lite",
  "futures-util",
+ "git-version",
  "gtk4",
  "humansize",
  "itertools",
diff --git a/Cargo.toml b/Cargo.toml
index 30efe28e..e9b76c84 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -47,6 +47,7 @@ lrumap = "0.1.0"
 memmap2 = "0.9.4"
 page_size = "0.6.0"
 anyhow = { version = "1.0.79", features = ["backtrace"] }
+git-version = "0.3.9"
 
 [dev-dependencies]
 serde = { version = "1.0.196", features = ["derive"] }
diff --git a/src/main.rs b/src/main.rs
index b0ff0312..137bd317 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -52,7 +52,9 @@ fn have_argument(name: &str) -> bool {
 }
 
 fn main() {
-    if have_argument("--test-cynthion") {
+    if have_argument("--version") {
+        println!("Packetry version {}", git_version::git_version!())
+    } else if have_argument("--test-cynthion") {
         let save_captures = have_argument("--save-captures");
         test_cynthion::run_test(save_captures);
     } else {
diff --git a/src/ui.rs b/src/ui.rs
index 94d0dd3d..9e9f67af 100644
--- a/src/ui.rs
+++ b/src/ui.rs
@@ -11,10 +11,11 @@ use std::sync::Mutex;
 
 use anyhow::{Context as ErrorContext, Error, bail};
 
-use gtk::gio::ListModel;
+use gtk::gio::{ActionEntry, ListModel, Menu, MenuItem, SimpleActionGroup};
 use gtk::glib::{Object, SignalHandlerId};
 use gtk::{
     prelude::*,
+    AboutDialog,
     Align,
     Application,
     ApplicationWindow,
@@ -22,9 +23,11 @@ use gtk::{
     DropDown,
     InfoBar,
     Label,
+    License,
     ListItem,
     ColumnView,
     ColumnViewColumn,
+    MenuButton,
     MessageType,
     ProgressBar,
     ResponseType,
@@ -370,6 +373,19 @@ pub fn activate(application: &Application) -> Result<(), Error> {
     let selector = DeviceSelector::new()?;
     capture_button.set_sensitive(selector.device_available());
 
+    let menu = Menu::new();
+    let about_item = MenuItem::new(Some("About..."), Some("actions.about"));
+    menu.append_item(&about_item);
+    let menu_button = MenuButton::builder()
+        .menu_model(&menu)
+        .build();
+    let action_group = SimpleActionGroup::new();
+    let action_about = ActionEntry::builder("about")
+        .activate(|_, _, _| display_error(show_about()))
+        .build();
+    action_group.add_action_entries([action_about]);
+    window.insert_action_group("actions", Some(&action_group));
+
     action_bar.pack_start(&open_button);
     action_bar.pack_start(&save_button);
     action_bar.pack_start(&gtk::Separator::new(Orientation::Vertical));
@@ -377,6 +393,7 @@ pub fn activate(application: &Application) -> Result<(), Error> {
     action_bar.pack_start(&capture_button);
     action_bar.pack_start(&stop_button);
     action_bar.pack_start(&selector.container);
+    action_bar.pack_end(&menu_button);
 
     let warning = DeviceWarning::new();
     warning.update(selector.device_unusable());
@@ -977,6 +994,32 @@ pub fn stop_cynthion() -> Result<(), Error> {
     })
 }
 
+fn show_about() -> Result<(), Error> {
+    const GIT_VERSION: &str = git_version::git_version!();
+    const LICENSE: &str = include_str!("../LICENSE");
+    let about = AboutDialog::builder()
+        .program_name("Packetry")
+        .version(format!("Version: {GIT_VERSION}"))
+        .comments("A fast, intuitive USB 2.0 protocol analysis application")
+        .copyright("© 2022-2024 Great Scott Gadgets. All rights reserved.")
+        .license_type(License::Bsd3)
+        .license(LICENSE)
+        .website("https://github.com/greatscottgadgets/packetry/")
+        .website_label("https://github.com/greatscottgadgets/packetry/")
+        .system_information(format!(
+            "OS: {}\n\
+             Architecture: {}\n\
+             GTK version: {}.{}.{}",
+            std::env::consts::OS,
+            std::env::consts::ARCH,
+            gtk::major_version(),
+            gtk::minor_version(),
+            gtk::micro_version()))
+        .build();
+    about.present();
+    Ok(())
+}
+
 pub fn display_error(result: Result<(), Error>) {
     #[cfg(not(test))]
     if let Err(e) = result {