diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0795aa5..b761315 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,14 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 暂无。
 
+## [0.6.1] - 2026-08-18
+
+### 🔧 其他变更
+- 依赖瘦身：移除未使用的直接依赖 `config`、`handlebars`、`shell-words`、`walkdir`、`console`、`lazy_static`、`atty`，crate 总数由 341 降至 296，release 二进制体积由 7.38 MB 降至 7.00 MB（-5.2%）
+- `lazy_static!` 宏替换为标准库 `LazyLock`；`atty` 替换为标准库 `std::io::IsTerminal`
+- `tokio` 特性由 `full` 精简为 `macros` + `rt-multi-thread`
+- `regex` 关闭默认 unicode 特性（保留 `std` + `perf`），行为变化：`\s`/`\d`/`\w` 字符类仅匹配 ASCII，对提交信息、版本号、邮箱、GPG Key ID 校验无实质影响
+
 ## [0.6.0] - 2026-08-17
 
 ### ✨ 新功能
diff --git a/Cargo.toml b/Cargo.toml
index ec9d4b4..1e711f7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "quicommit"
-version = "0.6.0"
+version = "0.6.1"
 edition = "2024"
 authors = ["Sidney Zhang <zly@lyzhang.me>"]
 description = "A powerful Git assistant tool with AI-powered commit/tag/changelog generation"
@@ -19,11 +19,9 @@ path = "src/main.rs"
 clap = { version = "4.5", features = ["derive", "env", "wrap_help"] }
 clap_complete = "4.5"
 dialoguer = "0.11"
-console = "0.15"
 indicatif = "0.17"
 
 # Configuration management
-config = "0.14"
 serde = { version = "1.0", features = ["derive"] }
 toml = "0.8"
 dirs = "5.0"
@@ -32,7 +30,7 @@ dirs = "5.0"
 git2 = "0.20.3"
 which = "6.0"
 
-tokio = { version = "1.35", features = ["full", "macros", "rt-multi-thread"] }
+tokio = { version = "1.35", features = ["macros", "rt-multi-thread"] }
 
 # Error handling
 thiserror = "1.0"
@@ -44,20 +42,16 @@ tracing-subscriber = { version = "0.3", features = ["env-filter", "fmt"] }
 
 # Utilities
 chrono = { version = "0.4", features = ["serde"] }
-regex = "1.10"
+regex = { version = "1.10", default-features = false, features = ["std", "perf"] }
 roxmltree = "0.20"
-lazy_static = "1.4"
 colored = "2.1"
-handlebars = "5.1"
 semver = "1.0"
-walkdir = "2.4"
 tempfile = "3.9"
 sha2 = "0.10"
 hex = "0.4"
 textwrap = "0.16"
 futures-util = "0.3"
 serde_json = "1.0"
-atty = "0.2"
 
 # Encryption for sensitive data (SSH keys, GPG, etc.)
 aes-gcm = "0.10"
@@ -71,8 +65,6 @@ keyring = { version = "3.6.3", features = ["apple-native", "windows-native", "sy
 # Interactive editor
 edit = "0.1"
 
-# Shell completion generation
-shell-words = "1.1"
 # LLM integration (rig-core only: HTTP backend + rustls; no agent/derive)
 rig-core = { version = "0.41", default-features = false, features = ["reqwest", "rustls"] }
 
diff --git a/src/utils/mod.rs b/src/utils/mod.rs
index 6e14760..301456a 100644
--- a/src/utils/mod.rs
+++ b/src/utils/mod.rs
@@ -62,7 +62,7 @@ pub fn password_input(prompt: &str) -> Result<String> {
 
 /// Check if running in a terminal
 pub fn is_terminal() -> bool {
-    atty::is(atty::Stream::Stdout)
+    std::io::IsTerminal::is_terminal(&io::stdout())
 }
 
 /// Format duration in human-readable format
diff --git a/src/utils/validators.rs b/src/utils/validators.rs
index 821143f..0428cb3 100644
--- a/src/utils/validators.rs
+++ b/src/utils/validators.rs
@@ -1,6 +1,6 @@
 use anyhow::{Result, bail};
-use lazy_static::lazy_static;
 use regex::Regex;
+use std::sync::LazyLock;
 
 /// Conventional commit types
 pub const CONVENTIONAL_TYPES: &[&str] = &[
@@ -37,32 +37,33 @@ pub const COMMITLINT_TYPES: &[&str] = &[
     "security", // Security-related changes
 ];
 
-lazy_static! {
-    /// Regex for conventional commit format
-    static ref CONVENTIONAL_COMMIT_REGEX: Regex = Regex::new(
-        r"^(?P<type>feat|fix|docs|style|refactor|perf|test|build|ci|chore|revert)(?:\((?P<scope>[^)]+)\))?(?P<breaking>!)?: (?P<description>.+)$"
-    ).unwrap();
+/// Regex for conventional commit format
+static CONVENTIONAL_COMMIT_REGEX: LazyLock<Regex> = LazyLock::new(|| {
+    Regex::new(
+        r"^(?P<type>feat|fix|docs|style|refactor|perf|test|build|ci|chore|revert)(?:\((?P<scope>[^)]+)\))?(?P<breaking>!)?: (?P<description>.+)$",
+    )
+    .unwrap()
+});
 
-    /// Regex for scope validation
-    static ref SCOPE_REGEX: Regex = Regex::new(
-        r"^[a-z0-9-]+$"
-    ).unwrap();
+/// Regex for scope validation
+static SCOPE_REGEX: LazyLock<Regex> = LazyLock::new(|| Regex::new(r"^[a-z0-9-]+$").unwrap());
 
-    /// Regex for version tag validation (semver)
-    static ref SEMVER_REGEX: Regex = Regex::new(
-        r"^v?(?P<major>0|[1-9]\d*)\.(?P<minor>0|[1-9]\d*)\.(?P<patch>0|[1-9]\d*)(?:-(?P<prerelease>(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+(?P<buildmetadata>[0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$"
-    ).unwrap();
+/// Regex for version tag validation (semver)
+static SEMVER_REGEX: LazyLock<Regex> = LazyLock::new(|| {
+    Regex::new(
+        r"^v?(?P<major>0|[1-9]\d*)\.(?P<minor>0|[1-9]\d*)\.(?P<patch>0|[1-9]\d*)(?:-(?P<prerelease>(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+(?P<buildmetadata>[0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$",
+    )
+    .unwrap()
+});
 
-    /// Regex for email validation
-    static ref EMAIL_REGEX: Regex = Regex::new(
-        r"^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$"
-    ).unwrap();
+/// Regex for email validation
+static EMAIL_REGEX: LazyLock<Regex> = LazyLock::new(|| {
+    Regex::new(r"^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$").unwrap()
+});
 
-    /// Regex for GPG key ID validation
-    static ref GPG_KEY_ID_REGEX: Regex = Regex::new(
-        r"^[A-F0-9]{16,40}$"
-    ).unwrap();
-}
+/// Regex for GPG key ID validation
+static GPG_KEY_ID_REGEX: LazyLock<Regex> =
+    LazyLock::new(|| Regex::new(r"^[A-F0-9]{16,40}$").unwrap());
 
 /// Validate conventional commit message
 pub fn validate_conventional_commit(message: &str) -> Result<()> {