diff --git a/Cargo.toml b/Cargo.toml
index 463b124..4602b94 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,6 @@ publish = false
 [dependencies]
 
 [dev-dependencies]
-input = { path = "./crates/input" }
 proconio = "=0.3.6"
 proconio-derive = "0.2.1"
 rand = "0.7.3"
diff --git a/crates/input/Cargo.toml b/crates/input/Cargo.toml
deleted file mode 100644
index feab978..0000000
--- a/crates/input/Cargo.toml
+++ /dev/null
@@ -1,10 +0,0 @@
-[package]
-name = "input"
-version = "0.1.0"
-authors = ["rust-lang-ja Developers"]
-edition = "2018"
-description = "Provides an `input!` macro for the `examples`."
-license = "CC0-1.0"
-publish = false
-
-[dependencies]
diff --git a/crates/input/src/lib.rs b/crates/input/src/lib.rs
deleted file mode 100644
index ea7cd6a..0000000
--- a/crates/input/src/lib.rs
+++ /dev/null
@@ -1,96 +0,0 @@
-//! A simple `input!` macro with minimal functionality.
-//!
-//! ```no_run
-//! #[macro_use]
-//! extern crate input as _;
-//!
-//! fn main() {
-//!     input! {
-//!         a: [u64],
-//!     }
-//! }
-//! ```
-
-use std::{
-    fmt,
-    io::{self, Read},
-    str::{FromStr, SplitAsciiWhitespace},
-};
-
-#[macro_export]
-macro_rules! input {
-    ($($tt:tt)*) => {
-        let mut __scanner = $crate::Scanner::new().unwrap();
-        $crate::input_inner!(@scanner(__scanner), @tts($($tt)*));
-        ::std::mem::drop(__scanner);
-    };
-}
-
-#[doc(hidden)]
-#[macro_export]
-macro_rules! input_inner {
-    (@scanner($scanner:ident), @tts()) => {};
-    (@scanner($scanner:ident), @tts(mut $single_tt_pat:tt : $readable:tt)) => {
-        let mut $single_tt_pat = $crate::read!(from $scanner { $readable });
-    };
-    (@scanner($scanner:ident), @tts($single_tt_pat:tt : $readable:tt)) => {
-        let $single_tt_pat = $crate::read!(from $scanner { $readable });
-    };
-    (@scanner($scanner:ident), @tts(mut $single_tt_pat:tt : $readable:tt, $($rest:tt)*)) => {
-        $crate::input_inner!(@scanner($scanner), @tts(mut $single_tt_pat: $readable));
-        $crate::input_inner!(@scanner($scanner), @tts($($rest)*));
-    };
-    (@scanner($scanner:ident), @tts($single_tt_pat:tt : $readable:tt, $($rest:tt)*)) => {
-        $crate::input_inner!(@scanner($scanner), @tts($single_tt_pat: $readable));
-        $crate::input_inner!(@scanner($scanner), @tts($($rest)*));
-    };
-}
-
-#[doc(hidden)]
-#[macro_export]
-macro_rules! read {
-    (from $scanner:ident { [$tt:tt] }) => {
-        $crate::read!(from $scanner { [$tt; $crate::read!(from $scanner { usize })] })
-    };
-    (from $scanner:ident  { [$tt:tt; $n:expr] }) => {
-        (0..$n).map(|_| $crate::read!(from $scanner { $tt })).collect::<Vec<_>>()
-    };
-    (from $scanner:ident { ($($tt:tt),+) }) => {
-        ($($crate::read!(from $scanner { $tt })),*)
-    };
-    (from $scanner:ident { $ty:ty }) => {
-        $scanner.parse::<$ty>()
-    };
-}
-
-#[doc(hidden)]
-pub struct Scanner {
-    words: SplitAsciiWhitespace<'static>,
-}
-
-impl Scanner {
-    pub fn new() -> io::Result<Self> {
-        let mut buf = String::with_capacity(1024);
-        io::stdin().read_to_string(&mut buf)?;
-        let words = Box::leak(buf.into_boxed_str()).split_ascii_whitespace();
-        Ok(Self { words })
-    }
-
-    /// Parses the next word.
-    ///
-    /// # Panics
-    ///
-    /// Panics if:
-    ///
-    /// - reached the end of input.
-    /// - the word is not successfully parsed.
-    pub fn parse<T>(&mut self) -> T
-    where
-        T: FromStr,
-        T::Err: fmt::Display,
-    {
-        let word = self.words.next().expect("reached the end of input");
-        word.parse()
-            .unwrap_or_else(|e| panic!("could not parse {:?}: {}", word, e))
-    }
-}
diff --git a/examples/library-checker-convolution-mod.rs b/examples/library-checker-convolution-mod.rs
index 9e179b0..4ee3f31 100644
--- a/examples/library-checker-convolution-mod.rs
+++ b/examples/library-checker-convolution-mod.rs
@@ -1,5 +1,5 @@
 #[macro_use]
-extern crate input as _;
+extern crate proconio as _;
 
 use ac_library_rs::{convolution, modint::ModInt998244353 as Mint};
 use std::fmt;
diff --git a/examples/library-checker-static-range-sum.rs b/examples/library-checker-static-range-sum.rs
index a4a5d8b..db38391 100644
--- a/examples/library-checker-static-range-sum.rs
+++ b/examples/library-checker-static-range-sum.rs
@@ -1,5 +1,5 @@
 #[macro_use]
-extern crate input as _;
+extern crate proconio as _;
 #[macro_use]
 extern crate proconio_derive as _;
 
diff --git a/examples/library-checker-sum-of-floor-of-linear.rs b/examples/library-checker-sum-of-floor-of-linear.rs
index 78c3ca6..c0ee4d4 100644
--- a/examples/library-checker-sum-of-floor-of-linear.rs
+++ b/examples/library-checker-sum-of-floor-of-linear.rs
@@ -1,5 +1,5 @@
 #[macro_use]
-extern crate input as _;
+extern crate proconio as _;
 #[macro_use]
 extern crate proconio_derive as _;
 
diff --git a/examples/library-checker-unionfind.rs b/examples/library-checker-unionfind.rs
index b6e1081..006457a 100644
--- a/examples/library-checker-unionfind.rs
+++ b/examples/library-checker-unionfind.rs
@@ -1,5 +1,5 @@
 #[macro_use]
-extern crate input as _;
+extern crate proconio as _;
 
 use ac_library_rs::dsu::Dsu;