diff --git a/.gitignore b/.gitignore
index 5e8a4a5..eb5a316 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1 @@
-.token
 target
-
diff --git a/.token.keep b/.token.keep
deleted file mode 100644
index 2ea7cab..0000000
--- a/.token.keep
+++ /dev/null
@@ -1 +0,0 @@
-RSLACK_TOKEN=your-token
diff --git a/Cargo.lock b/Cargo.lock
index 7675a31..564c1d7 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -142,6 +142,26 @@ dependencies = [
  "parking_lot",
 ]
 
+[[package]]
+name = "dirs"
+version = "5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dece029acd3353e3a58ac2e3eb3c8d6c35827a892edc6cc4138ef9c33df46ecd"
+dependencies = [
+ "dirs-sys",
+]
+
+[[package]]
+name = "dirs-sys"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "04414300db88f70d74c5ff54e50f9e1d1737d9a5b90f53fcf2e95ca2a9ab554b"
+dependencies = [
+ "libc",
+ "redox_users",
+ "windows-sys 0.45.0",
+]
+
 [[package]]
 name = "encoding_rs"
 version = "0.8.30"
@@ -728,9 +748,9 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.2.10"
+version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8383f39639269cde97d255a32bdb68c047337295414940c68bdd30c2e13203ff"
+checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
 dependencies = [
  "bitflags",
 ]
@@ -744,6 +764,17 @@ dependencies = [
  "redox_syscall",
 ]
 
+[[package]]
+name = "redox_users"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b033d837a7cf162d7993aded9304e30a83213c648b6e389db233191f891e5c2b"
+dependencies = [
+ "getrandom",
+ "redox_syscall",
+ "thiserror",
+]
+
 [[package]]
 name = "regex"
 version = "1.7.3"
@@ -812,6 +843,7 @@ name = "rslack"
 version = "0.2.8"
 dependencies = [
  "anyhow",
+ "dirs",
  "libc",
  "mockito",
  "reqwest",
@@ -1062,6 +1094,26 @@ dependencies = [
  "unicode-width",
 ]
 
+[[package]]
+name = "thiserror"
+version = "1.0.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "978c9a314bd8dc99be594bc3c175faaa9794be04a5a5e153caba6915336cebac"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9456a42c5b0d803c8cd86e73dd7cc9edd429499f37a3550d286d5e86720569f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.3",
+]
+
 [[package]]
 name = "tinyvec"
 version = "1.5.1"
diff --git a/Cargo.toml b/Cargo.toml
index df33be6..57ff9b9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,6 +13,7 @@ categories = ["command-line-utilities"]
 
 [dependencies]
 anyhow = "1.0.70"
+dirs = "5.0"
 libc = "0.2"
 reqwest = { version = "0.11.16", features = ["json"] }
 serde = { version = "1.0.160", features = ["derive"] }
diff --git a/README.md b/README.md
index b74a47c..894f8a2 100644
--- a/README.md
+++ b/README.md
@@ -27,28 +27,24 @@
 # Install
 brew install kohbis/rslack/rslack
 
-# Set token
+# Configuration
+# If both are set, use the value of `.rslack
 export RSLACK_TOKEN=your-token
+# or
+echo "RSLACK_TOKEN=your-token" > ${HOME}/.rslack
 
 rslack
 ```
 
 ### Local Build
 
-If you want by local build.
-
 ```bash
-export RSLACK_TOKEN=your-token
-# or
-mv .token.keep .token
-echo "RSLACK_TOKEN=your-token" > .token
-
-# If both are set, use the value of `.token`
-    
+# Configuration
+# and
 cargo run
 ```
 
-If you want to run on Docker, exec the following command.
+If you want to run on Docker, please execute the following command.
 
 ```bash
 docker build -t rslack .
diff --git a/src/bin/rslack.rs b/src/bin/rslack.rs
index b66ddbc..eeecd5b 100644
--- a/src/bin/rslack.rs
+++ b/src/bin/rslack.rs
@@ -11,7 +11,6 @@ use rslack::option::Opt;
 use rslack::slack;
 
 const SLACK_URL: &'static str = "https://slack.com";
-const TOKEN_FILE: &'static str = ".token";
 const USAGE_MESSAGES: &'static str = "(post: ctrl-p / exit: ctrl-c)";
 
 #[tokio::main]
@@ -20,7 +19,7 @@ async fn main() {
     let mut channel = opts.channel;
     let mut message = opts.message;
 
-    let config = match Config::new(TOKEN_FILE) {
+    let config = match Config::new(None) {
         Ok(config) => config,
         Err(err) => return eprintln!("{}", err),
     };
diff --git a/src/config/mod.rs b/src/config/mod.rs
index 5e3f290..688159e 100644
--- a/src/config/mod.rs
+++ b/src/config/mod.rs
@@ -1,10 +1,12 @@
 use anyhow::{anyhow, Result};
+use dirs;
 use std::env;
 use std::fs::File;
 use std::io::{BufRead, BufReader};
-use std::path::Path;
+use std::path::{Path, PathBuf};
 
-const RSLACK_TOKEN: &str = "RSLACK_TOKEN";
+const RSLACK_TOKEN: &'static str = "RSLACK_TOKEN";
+const CONFIG_FILE: &'static str = ".rslack";
 
 #[derive(Debug, PartialEq)]
 pub struct Config {
@@ -12,15 +14,19 @@ pub struct Config {
 }
 
 impl Config {
-    pub fn new(filename: &str) -> Result<Self> {
+    pub fn new(config_path: Option<PathBuf>) -> Result<Self> {
         let mut config = Self {
             token: String::new(),
         };
 
         config.read_from_env()?;
 
-        if Path::new(filename).exists() {
-            config.read_from_file(filename)?;
+        if let Some(path) = config_path {
+            config.read_from_file(&path).ok();
+        } else {
+            let home = dirs::home_dir().ok_or(anyhow!("Home directory not found."))?;
+            let path = home.join(CONFIG_FILE);
+            config.read_from_file(&path).ok();
         }
 
         config.validate()?;
@@ -39,8 +45,8 @@ impl Config {
     }
 
     #[allow(clippy::single_match)]
-    fn read_from_file(&mut self, filename: &str) -> Result<&Self> {
-        let file = match File::open(filename) {
+    fn read_from_file(&mut self, path: &Path) -> Result<&Self> {
+        let file = match File::open(path) {
             Ok(file) => file,
             Err(err) => return Err(anyhow!(err)),
         };
@@ -85,7 +91,9 @@ mod tests {
     #[serial]
     fn initialize_with_valid_file() {
         setup();
-        let actual = Config::new("tests/fixtures/config/token.test.valid").unwrap();
+
+        let config_path = PathBuf::from("tests/fixtures/config/config.test.valid");
+        let actual = Config::new(Some(config_path)).unwrap();
         let expected = Config {
             token: String::from("token-from-file-123"),
         };
@@ -97,7 +105,9 @@ mod tests {
     #[should_panic]
     fn initialize_with_invalid_file() {
         setup();
-        Config::new("tests/token.test.invalid").unwrap();
+
+        let config_path = PathBuf::from("tests/config.test.invalid");
+        Config::new(Some(config_path)).unwrap();
     }
 
     #[test]
@@ -105,7 +115,9 @@ mod tests {
     fn initialize_with_env() {
         setup();
         env::set_var(RSLACK_TOKEN, "token-from-env-123");
-        let actual = Config::new("no_file").unwrap();
+
+        let config_path = PathBuf::from("no_file");
+        let actual = Config::new(Some(config_path)).unwrap();
         let expected = Config {
             token: String::from("token-from-env-123"),
         };
@@ -118,7 +130,9 @@ mod tests {
     fn initialize_with_empty_env() {
         setup();
         env::set_var(RSLACK_TOKEN, "");
-        Config::new("no_file").unwrap();
+
+        let config_path = PathBuf::from("no_file");
+        Config::new(Some(config_path)).unwrap();
     }
 
     #[test]
@@ -126,10 +140,12 @@ mod tests {
     fn initialize_with_env_and_file() {
         setup();
         env::set_var(RSLACK_TOKEN, "token-from-env-123");
+
         let expected = Config {
             token: String::from("token-from-file-123"),
         };
-        let actual = Config::new("tests/fixtures/config/token.test.valid").unwrap();
+        let config_path = PathBuf::from("tests/fixtures/config/config.test.valid");
+        let actual = Config::new(Some(config_path)).unwrap();
         assert_eq!(actual, expected);
     }
 
diff --git a/tests/fixtures/config/token.test.invalid b/tests/fixtures/config/config.test.invalid
similarity index 100%
rename from tests/fixtures/config/token.test.invalid
rename to tests/fixtures/config/config.test.invalid
diff --git a/tests/fixtures/config/token.test.valid b/tests/fixtures/config/config.test.valid
similarity index 100%
rename from tests/fixtures/config/token.test.valid
rename to tests/fixtures/config/config.test.valid