diff --git a/Cargo.lock b/Cargo.lock
index e172eea..030fe1e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -38,7 +38,7 @@ checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
 
 [[package]]
 name = "claude-code-usage-monitor"
-version = "1.3.0"
+version = "1.3.1"
 dependencies = [
  "dirs",
  "native-tls",
diff --git a/Cargo.toml b/Cargo.toml
index 5dd53e8..0648989 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "claude-code-usage-monitor"
-version = "1.3.0"
+version = "1.3.1"
 edition = "2021"
 license = "MIT"
 description = "Claude Code Usage Monitor"
diff --git a/src/localization/english.rs b/src/localization/english.rs
index 4e753cb..8ad38fe 100644
--- a/src/localization/english.rs
+++ b/src/localization/english.rs
@@ -28,6 +28,7 @@ pub(super) const STRINGS: Strings = Strings {
     update_available: "Update available",
     update_prompt_now: "Version {version} is available. Do you want to update now?",
     exit: "Exit",
+    show_widget: "Show Widget",
     session_window: "5h",
     weekly_window: "7d",
     now: "now",
diff --git a/src/localization/french.rs b/src/localization/french.rs
index af20d13..d0c8f11 100644
--- a/src/localization/french.rs
+++ b/src/localization/french.rs
@@ -28,6 +28,7 @@ pub(super) const STRINGS: Strings = Strings {
     update_available: "Mise à jour disponible",
     update_prompt_now: "La version {version} est disponible. Voulez-vous mettre à jour maintenant ?",
     exit: "Quitter",
+    show_widget: "Afficher le widget",
     session_window: "5h",
     weekly_window: "7d",
     now: "maintenant",
diff --git a/src/localization/german.rs b/src/localization/german.rs
index 2de54d7..e6ebac5 100644
--- a/src/localization/german.rs
+++ b/src/localization/german.rs
@@ -28,6 +28,7 @@ pub(super) const STRINGS: Strings = Strings {
     update_available: "Update verfügbar",
     update_prompt_now: "Version {version} ist verfügbar. Möchten Sie jetzt aktualisieren?",
     exit: "Beenden",
+    show_widget: "Widget anzeigen",
     session_window: "5h",
     weekly_window: "7d",
     now: "jetzt",
diff --git a/src/localization/japanese.rs b/src/localization/japanese.rs
index 938c35c..07707bb 100644
--- a/src/localization/japanese.rs
+++ b/src/localization/japanese.rs
@@ -28,6 +28,7 @@ pub(super) const STRINGS: Strings = Strings {
     update_available: "更新が利用可能です",
     update_prompt_now: "バージョン {version} が利用可能です。今すぐ更新しますか？",
     exit: "終了",
+    show_widget: "ウィジェットを表示",
     session_window: "5h",
     weekly_window: "7d",
     now: "今",
diff --git a/src/localization/korean.rs b/src/localization/korean.rs
new file mode 100644
index 0000000..ca2a88e
--- /dev/null
+++ b/src/localization/korean.rs
@@ -0,0 +1,38 @@
+use super::Strings;
+
+pub(super) const UPDATE_VIA_WINGET_LABEL: &str = "WinGet으로 업데이트";
+
+pub(super) const STRINGS: Strings = Strings {
+    window_title: "Claude Code 사용량 모니터",
+    refresh: "새로고침",
+    update_frequency: "업데이트 주기",
+    one_minute: "1분",
+    five_minutes: "5분",
+    fifteen_minutes: "15분",
+    one_hour: "1시간",
+    settings: "설정",
+    start_with_windows: "Windows 시작 시 자동 실행",
+    reset_position: "위치 초기화",
+    language: "언어",
+    system_default: "시스템 기본값",
+    check_for_updates: "업데이트 확인",
+    checking_for_updates: "업데이트 확인 중...",
+    updates: "업데이트",
+    update_in_progress: "이미 업데이트 확인이 진행 중입니다.",
+    up_to_date: "이미 최신 버전입니다.",
+    up_to_date_short: "최신",
+    update_failed: "자동 업데이트를 완료할 수 없습니다",
+    applying_update: "업데이트 적용 중...",
+    update_to: "업데이트 대상",
+    update_available: "업데이트 사용 가능",
+    update_prompt_now: "버전 {version}을 사용할 수 있습니다. 지금 업데이트하시겠습니까?",
+    exit: "종료",
+    show_widget: "위젯 표시",
+    session_window: "5시간",
+    weekly_window: "7일",
+    now: "지금",
+    day_suffix: "일",
+    hour_suffix: "시간",
+    minute_suffix: "분",
+    second_suffix: "초",
+};
diff --git a/src/localization/mod.rs b/src/localization/mod.rs
index 64d1a86..368d69e 100644
--- a/src/localization/mod.rs
+++ b/src/localization/mod.rs
@@ -2,6 +2,7 @@ mod english;
 mod french;
 mod german;
 mod japanese;
+mod korean;
 mod spanish;
 
 use windows::core::PWSTR;
@@ -17,15 +18,17 @@ pub enum LanguageId {
     French,
     German,
     Japanese,
+    Korean,
 }
 
 impl LanguageId {
-    pub const ALL: [LanguageId; 5] = [
+    pub const ALL: [LanguageId; 6] = [
         LanguageId::English,
         LanguageId::Spanish,
         LanguageId::French,
         LanguageId::German,
         LanguageId::Japanese,
+        LanguageId::Korean,
     ];
 
     pub fn code(self) -> &'static str {
@@ -35,6 +38,7 @@ impl LanguageId {
             Self::French => "fr",
             Self::German => "de",
             Self::Japanese => "ja",
+            Self::Korean => "ko",
         }
     }
 
@@ -45,6 +49,7 @@ impl LanguageId {
             Self::French => "Français",
             Self::German => "Deutsch",
             Self::Japanese => "日本語",
+            Self::Korean => "한국어",
         }
     }
 
@@ -55,6 +60,7 @@ impl LanguageId {
             Self::French => french::STRINGS,
             Self::German => german::STRINGS,
             Self::Japanese => japanese::STRINGS,
+            Self::Korean => korean::STRINGS,
         }
     }
 
@@ -65,6 +71,7 @@ impl LanguageId {
             Self::French => french::UPDATE_VIA_WINGET_LABEL,
             Self::German => german::UPDATE_VIA_WINGET_LABEL,
             Self::Japanese => japanese::UPDATE_VIA_WINGET_LABEL,
+            Self::Korean => korean::UPDATE_VIA_WINGET_LABEL,
         }
     }
 
@@ -80,6 +87,7 @@ impl LanguageId {
             "fr" => Some(Self::French),
             "de" => Some(Self::German),
             "ja" => Some(Self::Japanese),
+            "ko" => Some(Self::Korean),
             _ => None,
         }
     }
@@ -112,6 +120,7 @@ pub struct Strings {
     pub update_available: &'static str,
     pub update_prompt_now: &'static str,
     pub exit: &'static str,
+    pub show_widget: &'static str,
     pub session_window: &'static str,
     pub weekly_window: &'static str,
     pub now: &'static str,
diff --git a/src/localization/spanish.rs b/src/localization/spanish.rs
index 21d7b1f..3f9f8b6 100644
--- a/src/localization/spanish.rs
+++ b/src/localization/spanish.rs
@@ -28,6 +28,7 @@ pub(super) const STRINGS: Strings = Strings {
     update_available: "Actualización disponible",
     update_prompt_now: "La versión {version} está disponible. ¿Quieres actualizar ahora?",
     exit: "Salir",
+    show_widget: "Mostrar widget",
     session_window: "5h",
     weekly_window: "7d",
     now: "ahora",
diff --git a/src/window.rs b/src/window.rs
index 61331ae..6274f34 100644
--- a/src/window.rs
+++ b/src/window.rs
@@ -108,6 +108,7 @@ const IDM_LANG_FRENCH: u16 = 43;
 const IDM_LANG_GERMAN: u16 = 44;
 const IDM_LANG_JAPANESE: u16 = 45;
 const IDM_SHOW_DECIMALS: u16 = 50;
+const IDM_LANG_KOREAN: u16 = 46;
 
 const DIVIDER_HIT_ZONE: i32 = 13; // LEFT_DIVIDER_W + DIVIDER_RIGHT_MARGIN
 
@@ -1834,7 +1835,7 @@ unsafe extern "system" fn wnd_proc(
                     SetTimer(hwnd, TIMER_POLL, new_interval, None);
                 }
                 IDM_LANG_SYSTEM | IDM_LANG_ENGLISH | IDM_LANG_SPANISH | IDM_LANG_FRENCH
-                | IDM_LANG_GERMAN | IDM_LANG_JAPANESE => {
+                | IDM_LANG_GERMAN | IDM_LANG_JAPANESE | IDM_LANG_KOREAN => {
                     let language_override = match id {
                         IDM_LANG_SYSTEM => None,
                         IDM_LANG_ENGLISH => Some(LanguageId::English),
@@ -1842,6 +1843,7 @@ unsafe extern "system" fn wnd_proc(
                         IDM_LANG_FRENCH => Some(LanguageId::French),
                         IDM_LANG_GERMAN => Some(LanguageId::German),
                         IDM_LANG_JAPANESE => Some(LanguageId::Japanese),
+                        IDM_LANG_KOREAN => Some(LanguageId::Korean),
                         _ => None,
                     };
                     {
@@ -2025,6 +2027,7 @@ fn show_context_menu(hwnd: HWND) {
                 LanguageId::French => IDM_LANG_FRENCH,
                 LanguageId::German => IDM_LANG_GERMAN,
                 LanguageId::Japanese => IDM_LANG_JAPANESE,
+                LanguageId::Korean => IDM_LANG_KOREAN,
             };
             let label_str = native_interop::wide_str(language.native_name());
             let flags = if language_override == Some(language) {
@@ -2074,7 +2077,7 @@ fn show_context_menu(hwnd: HWND) {
             PCWSTR::from_raw(settings_label.as_ptr()),
         );
 
-        let widget_label = native_interop::wide_str("Show Widget");
+        let widget_label = native_interop::wide_str(strings.show_widget);
         let widget_flags = if widget_visible { MF_CHECKED } else { MENU_ITEM_FLAGS(0) };
         let _ = AppendMenuW(
             menu,