diff --git a/Cargo.lock b/Cargo.lock
index 6aef93d..f94fb07 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -31,7 +31,7 @@ dependencies = [
 
 [[package]]
 name = "anime-game-core"
-version = "0.2.2"
+version = "0.3.0"
 dependencies = [
  "bzip2",
  "curl",
@@ -51,7 +51,7 @@ dependencies = [
 
 [[package]]
 name = "anime-game-launcher"
-version = "0.6.2"
+version = "0.6.3"
 dependencies = [
  "anime-game-core",
  "dirs",
diff --git a/Cargo.toml b/Cargo.toml
index 91a54e9..ceb2a27 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "anime-game-launcher"
-version = "0.6.2"
+version = "0.6.3"
 description = "Anime Game launcher"
 authors = ["Nikita Podvirnyy <suimin.tu.mu.ga.mi@gmail.com>"]
 license = "GPL-3.0"
diff --git a/anime-game-core b/anime-game-core
index 9820453..8c7a8f9 160000
--- a/anime-game-core
+++ b/anime-game-core
@@ -1 +1 @@
-Subproject commit 9820453d6fdc5ccdc832fd0a8bbe80e210df2b2e
+Subproject commit 8c7a8f9bcbe008f164e810aeddbe33366fa541ec
diff --git a/src/lib/consts.rs b/src/lib/consts.rs
index e54d1c2..bf1d7d1 100644
--- a/src/lib/consts.rs
+++ b/src/lib/consts.rs
@@ -1,6 +1,14 @@
+use std::time::Duration;
+
 static mut LAUNCHER_DIR: Option<Option<String>> = None;
 static mut CONFIG_FILE: Option<Option<String>> = None;
 
+/// Timeout used by `anime_game_core::telemetry::is_disabled` to check acessibility of telemetry servers
+pub const TELEMETRY_CHECK_TIMEOUT: Option<Duration> = Some(Duration::from_secs(3));
+
+/// Timeout used by `anime_game_core::linux_patch::Patch::try_fetch` to fetch patch info
+pub const PATCH_FETCHING_TIMEOUT: Option<Duration> = Some(Duration::from_secs(5));
+
 pub fn launcher_dir() -> Option<String> {
     unsafe {
         match &LAUNCHER_DIR {
diff --git a/src/lib/game.rs b/src/lib/game.rs
index c707cfa..7365535 100644
--- a/src/lib/game.rs
+++ b/src/lib/game.rs
@@ -2,6 +2,9 @@ use std::io::{Error, ErrorKind};
 use std::path::Path;
 use std::process::Command;
 
+use anime_game_core::telemetry;
+
+use super::consts;
 use super::config;
 
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
@@ -73,6 +76,12 @@ pub fn run(debug: bool) -> std::io::Result<()> {
         None => return Err(Error::new(ErrorKind::Other, "Couldn't find wine executable"))
     };
 
+    // Check telemetry servers
+
+    if let Some(server) = telemetry::is_disabled(consts::TELEMETRY_CHECK_TIMEOUT) {
+        return Err(Error::new(ErrorKind::Other, format!("Telemetry server is not disabled: {server}")));
+    }
+
     // Prepare bash -c '<command>'
 
     let mut bash_chain = String::new();
diff --git a/src/lib/launcher/states.rs b/src/lib/launcher/states.rs
index efb2bff..57e449f 100644
--- a/src/lib/launcher/states.rs
+++ b/src/lib/launcher/states.rs
@@ -2,6 +2,7 @@ use std::io::{Error, ErrorKind};
 
 use anime_game_core::prelude::*;
 
+use crate::lib::consts;
 use crate::lib::config;
 use crate::lib::wine_prefix::WinePrefix;
 
@@ -93,7 +94,7 @@ impl LauncherState {
 
                 status("Updating patch info...");
 
-                let patch = Patch::try_fetch(config.patch.servers.clone())?;
+                let patch = Patch::try_fetch(config.patch.servers.clone(), consts::PATCH_FETCHING_TIMEOUT)?;
 
                 if patch.is_applied(&config.game.path)? {
                     Self::Launch
diff --git a/src/ui/main.rs b/src/ui/main.rs
index 9d1c43a..c72c73e 100644
--- a/src/ui/main.rs
+++ b/src/ui/main.rs
@@ -18,6 +18,7 @@ use super::preferences::PreferencesStack;
 use super::traits::toast::Toast;
 use super::components::progress_bar::*;
 
+use crate::lib::consts;
 use crate::lib::config;
 use crate::lib::game;
 use crate::lib::launcher::states::LauncherState;
@@ -275,7 +276,9 @@ impl App {
                                         if let Err(err) = game::run(false) {
                                             this.widgets.window.show();
 
-                                            this.toast("Failed to run game", err);
+                                            this.update(Actions::Toast(Rc::new((
+                                                String::from("Failed to run game"), err
+                                            )))).unwrap();
                                         }
 
                                         else {
@@ -635,7 +638,7 @@ impl App {
 
                                             let total = broken.len() as f64;
 
-                                            let is_patch_applied = match Patch::try_fetch(config.patch.servers) {
+                                            let is_patch_applied = match Patch::try_fetch(config.patch.servers, consts::PATCH_FETCHING_TIMEOUT) {
                                                 Ok(patch) => patch.is_applied(&config.game.path).unwrap_or(true),
                                                 Err(_) => true
                                             };
diff --git a/src/ui/preferences/general.rs b/src/ui/preferences/general.rs
index 7e6ffdd..10c6ae6 100644
--- a/src/ui/preferences/general.rs
+++ b/src/ui/preferences/general.rs
@@ -649,7 +649,7 @@ impl App {
                 self.widgets.game_version.set_label(&current.to_string());
                 self.widgets.game_version.set_css_classes(&["error"]);
 
-                self.widgets.game_version.set_tooltip_text(Some(&format!("Game is too outdated and can't be updated. Latest version: {}", latest)));
+                self.widgets.game_version.set_tooltip_text(Some(&format!("Game is too outdated and can't be updated. Latest version: {latest}")));
             },
             VersionDiff::NotInstalled { .. } => {
                 self.widgets.game_version.set_label("not installed");
@@ -660,7 +660,7 @@ impl App {
         // Update patch version
         status_page.set_description(Some("Updating patch info..."));
 
-        let patch = Patch::try_fetch(config.patch.servers)?;
+        let patch = Patch::try_fetch(config.patch.servers, consts::PATCH_FETCHING_TIMEOUT)?;
 
         match patch {
             Patch::NotAvailable => {
@@ -673,7 +673,7 @@ impl App {
                 self.widgets.patch_version.set_label("outdated");
                 self.widgets.patch_version.set_css_classes(&["warning"]);
 
-                self.widgets.patch_version.set_tooltip_text(Some(&format!("Patch is outdated ({} -> {})", current, latest)));
+                self.widgets.patch_version.set_tooltip_text(Some(&format!("Patch is outdated ({current} -> {latest})")));
             },
             Patch::Preparation { .. } => {
                 self.widgets.patch_version.set_label("preparation");