diff --git a/Cargo.toml b/Cargo.toml
index 63f2cdc..2646cbc 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,6 @@
 [package]
 name = "cargo-equip"
 version = "0.17.0"
-authors = ["Ryo Yamashita <qryxip@gmail.com>"]
 edition = "2018"
 license = "MIT OR Apache-2.0"
 description = "A Cargo subcommand to bundle your code into one `.rs` file for competitive programming."
diff --git a/src/lib.rs b/src/lib.rs
index d3086dc..a403e8a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -43,7 +43,7 @@ use structopt::{clap::AppSettings, StructOpt};
 
 #[derive(StructOpt, Debug)]
 #[structopt(
-    author,
+    author("Ryo Yamashita <qryxip@gmail.com>"),
     about("Please run as `cargo equip`, not `cargo-equip`."),
     bin_name("cargo"),
     global_settings(&[AppSettings::DeriveDisplayOrder, AppSettings::UnifiedHelpMessage])
@@ -56,7 +56,7 @@ pub enum Opt {
 
             Use -h for short descriptions and --help for more detials.
         "#}),
-        author,
+        author("Ryo Yamashita <qryxip@gmail.com>"),
         usage(
             r#"cargo equip [OPTIONS]
     cargo equip [OPTIONS] --src <PATH>