diff --git a/Cargo.toml b/Cargo.toml
index 8b4218a..aa30a88 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,12 +1,16 @@
 [package]
 name = "anime-game-launcher"
-version = "0.1.0"
+version = "0.1.1"
 description = "Anime Game launcher"
 authors = ["Nikita Podvirnyy <suimin.tu.mu.ga.mi@gmail.com>"]
 license = "GPL-3.0"
 edition = "2021"
 build = "build.rs"
 
+[profile.release]
+strip = true
+lto = true
+
 [build-dependencies]
 gtk4 = "0.4"
 
diff --git a/anime-game-core b/anime-game-core
index 93cff0f..f5c91f0 160000
--- a/anime-game-core
+++ b/anime-game-core
@@ -1 +1 @@
-Subproject commit 93cff0fc6a6b1904bedbff8e42f925602947befb
+Subproject commit f5c91f01561cd12873e92bb51b37c7d68ca0cd99
diff --git a/assets/icons/64x64.ico b/assets/icons/64x64.ico
new file mode 100644
index 0000000..8025d8b
Binary files /dev/null and b/assets/icons/64x64.ico differ
diff --git a/assets/resources.xml b/assets/resources.xml
index 4a66f5a..c440f83 100644
--- a/assets/resources.xml
+++ b/assets/resources.xml
@@ -1,6 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <gresources>
-  <gresource prefix="/org/app/assets/">
-    <file>images/icon.png</file>
+  <gresource prefix="/org/app/assets/images">
+    <file alias="icon.png">images/icon.png</file>
+  </gresource>
+  <gresource prefix="/org/app/assets/icons">
+    <file alias="64x64">icons/64x64.ico</file>
   </gresource>
 </gresources>
diff --git a/assets/ui/main.blp b/assets/ui/main.blp
index ecc879f..1b100da 100644
--- a/assets/ui/main.blp
+++ b/assets/ui/main.blp
@@ -5,7 +5,7 @@ Adw.ApplicationWindow window {
     default-width: 900;
     default-height: 600;
 
-    styles ["devel"]
+    icon-name: "resource:///org/app/assets/icons/64x64";
 
     content: Adw.ToastOverlay toast_overlay {
         Adw.Leaflet leaflet {
diff --git a/src/main.rs b/src/main.rs
index 7526d86..440e3ed 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,7 +1,9 @@
 use gtk4::{self as gtk, prelude::*};
 use libadwaita::{self as adw, prelude::*};
 
-use gtk::{CssProvider, StyleContext, gdk::Display, STYLE_PROVIDER_PRIORITY_APPLICATION};
+use gtk::{CssProvider, StyleContext, STYLE_PROVIDER_PRIORITY_APPLICATION};
+use gtk::gdk::Display;
+use gtk::glib::set_application_name;
 
 pub mod ui;
 pub mod lib;
@@ -10,6 +12,7 @@ use ui::*;
 
 pub const APP_ID: &str = "com.gitlab.an-anime-team.an-anime-game-launcher-gtk";
 pub const APP_VERSION: &str = env!("CARGO_PKG_VERSION");
+pub const APP_DEBUG: bool = cfg!(debug_assertions);
 
 #[tokio::main]
 async fn main() {
@@ -20,6 +23,10 @@ async fn main() {
     gtk::gio::resources_register_include!(".assets.gresource")
         .expect("Failed to register resources");
 
+    // Set application's title
+    // FIXME: doesn't work?
+    set_application_name("An Anime Game Launcher");
+
     // Create app
     let application = gtk::Application::new(
         Some(APP_ID),
diff --git a/src/ui/main.rs b/src/ui/main.rs
index fdc678b..fbcbff3 100644
--- a/src/ui/main.rs
+++ b/src/ui/main.rs
@@ -74,16 +74,36 @@ impl AppWidgets {
             preferences_stack: PreferencesStack::new(window, toast_overlay)?
         };
 
+        // Set devel style to ApplicationWindow if it's debug mode
+        if crate::APP_DEBUG {
+            result.window.add_css_class("devel");
+        }
+
         // Set default About Dialog values
-        result.about.set_version(Some(crate::APP_VERSION));
+        if crate::APP_DEBUG {
+            result.about.set_version(Some(format!("{} (development)", crate::APP_VERSION).as_str()));
+        }
+
+        else {
+            result.about.set_version(Some(crate::APP_VERSION));
+        }
+
         result.about.set_license_type(gtk::License::Gpl30);
 
         result.about.set_authors(&[
             "Nikita Podvirnyy <suimin.tu.mu.ga.mi@gmail.com>"
         ]);
 
+        let curl_info = anime_game_core::curl_sys::Version::get();
+
         result.about.set_system_information(Some(&[
-            format!("Anime Game core library version:   {}", anime_game_core::VERSION)
+            format!("Anime Game core library version:    {}", anime_game_core::VERSION),
+            format!("    Curl version:    {}", curl_info.version()),
+            format!("     SSL version:    {}", curl_info.ssl_version().unwrap_or("?")),
+            String::new(),
+            format!("GTK version:    {}.{}.{}", gtk::major_version(), gtk::minor_version(), gtk::micro_version()),
+            format!("Libadwaita version:    {}.{}.{}", adw::major_version(), adw::minor_version(), adw::micro_version()),
+            format!("Pango version:    {}", gtk::pango::version_string().unwrap_or("?".into())),
         ].join("\n")));
 
         // Add preferences page to the leaflet