diff --git a/kanaria_core/Cargo.toml b/kanaria_core/Cargo.toml
index ddbf987..141c9af 100644
--- a/kanaria_core/Cargo.toml
+++ b/kanaria_core/Cargo.toml
@@ -1,7 +1,8 @@
 [package]
 name = "kanaria"
-version = "0.2.0"
+version = "0.2.1"
 authors = ["osamu <46447427+sam-osamu@users.noreply.github.com>"]
+edition = "2021"
 
 repository = "https://github.com/samunohito/kanaria"
 readme = "../README.md"
@@ -15,7 +16,7 @@ exclude = [
 ]
 
 [dependencies]
-bitflags = "1.2.1"
+bitflags = "2.6.0"
 
 [lib]
 name = "kanaria"
diff --git a/kanaria_core/src/constants.rs b/kanaria_core/src/constants.rs
index f95d617..25a53bc 100644
--- a/kanaria_core/src/constants.rs
+++ b/kanaria_core/src/constants.rs
@@ -9,7 +9,7 @@ pub const CONVERT_TARGET_SYMBOL: u32 = 0b00000100;
 /// 半角・全角の変換対象としてカタカナを設定する際のビットフラグです。
 pub const CONVERT_TARGET_KATAKANA: u32 = 0b00001000;
 /// 半角・全角の変換が可能なものはすべて変換します。
-pub const CONVERT_TARGET_ALL: u32 = (CONVERT_TARGET_NUMBER | CONVERT_TARGET_ALPHABET | CONVERT_TARGET_SYMBOL | CONVERT_TARGET_KATAKANA);
+pub const CONVERT_TARGET_ALL: u32 = CONVERT_TARGET_NUMBER | CONVERT_TARGET_ALPHABET | CONVERT_TARGET_SYMBOL | CONVERT_TARGET_KATAKANA;
 
 /// 大文字への変換を行う際に設定する値です。
 pub const CONVERT_TYPE_UPPER_CASE: u32 = 1;
diff --git a/kanaria_core/src/string/ext.rs b/kanaria_core/src/string/ext.rs
index ec864fe..17fa599 100644
--- a/kanaria_core/src/string/ext.rs
+++ b/kanaria_core/src/string/ext.rs
@@ -1,5 +1,5 @@
-use UCSChar;
-use string::string::UCSStr;
+use crate::UCSChar;
+use crate::string::string::UCSStr;
 
 impl<T> Clone for UCSStr<T> where T: UCSChar {
     fn clone(&self) -> Self {
@@ -12,4 +12,4 @@ impl<T> Clone for UCSStr<T> where T: UCSChar {
     fn clone_from(&mut self, source: &Self) {
         *self = source.clone()
     }
-}
\ No newline at end of file
+}
diff --git a/kanaria_core/src/string/params.rs b/kanaria_core/src/string/params.rs
index 228df36..6d1bc79 100644
--- a/kanaria_core/src/string/params.rs
+++ b/kanaria_core/src/string/params.rs
@@ -1,4 +1,4 @@
-use utils::ConvertTarget;
+use crate::utils::ConvertTarget;
 
 #[derive(Debug, PartialEq, Copy, Clone)]
 pub enum ConvertType {
@@ -35,4 +35,5 @@ impl ConvertParameter {
             width_convert_target,
         }
     }
-}
\ No newline at end of file
+}
+
diff --git a/kanaria_core/src/string/string.rs b/kanaria_core/src/string/string.rs
index 4080983..cff840d 100644
--- a/kanaria_core/src/string/string.rs
+++ b/kanaria_core/src/string/string.rs
@@ -1,12 +1,13 @@
 use std::char;
 use std::slice::from_raw_parts;
 
-use string::params::{ConvertParameter, ConvertType};
-use string::params::ConvertType::*;
-use utils::{AsciiUtils, KanaUtils, WidthUtils, CharExtend};
+use crate::string::params::{ConvertParameter, ConvertType};
+use crate::string::params::ConvertType::*;
+use crate::utils::{AsciiUtils, KanaUtils, WidthUtils, CharExtend};
 
 use crate::UCSChar;
 use crate::utils::ConvertTarget;
+use crate::string::ConvertType::{UpperCase, LowerCase, Hiragana, Katakana, Wide, Narrow};
 
 pub struct UCSStr<T> where T: UCSChar {
     /// 変換対象文字列を保持します。
diff --git a/kanaria_core/src/utils/chars.rs b/kanaria_core/src/utils/chars.rs
index d5fe78e..73eddf8 100644
--- a/kanaria_core/src/utils/chars.rs
+++ b/kanaria_core/src/utils/chars.rs
@@ -1,5 +1,5 @@
-use UCSChar;
-use utils::{AsciiUtils, KanaUtils};
+use crate::UCSChar;
+use crate::utils::{AsciiUtils, KanaUtils};
 
 pub struct CharsUtils;
 
@@ -60,4 +60,4 @@ impl CharsUtils {
             KanaUtils::is_wide_katakana(target) ||
             KanaUtils::is_wide_jis_symbol(target)
     }
-}
\ No newline at end of file
+}
diff --git a/kanaria_core/src/utils/ext.rs b/kanaria_core/src/utils/ext.rs
index 88a8ac8..d162019 100644
--- a/kanaria_core/src/utils/ext.rs
+++ b/kanaria_core/src/utils/ext.rs
@@ -1,4 +1,4 @@
-use UCSChar;
+use crate::UCSChar;
 
 pub trait CharExtend {
     fn to_char_vec(&self) -> Vec<char>;
@@ -18,4 +18,4 @@ impl CharExtend for str {
     fn to_u32_vec(&self) -> Vec<u32> {
         self.chars().map(|c| c as u32).collect()
     }
-}
\ No newline at end of file
+}
diff --git a/kanaria_core/src/utils/mod.rs b/kanaria_core/src/utils/mod.rs
index 34a44b7..61c26d7 100644
--- a/kanaria_core/src/utils/mod.rs
+++ b/kanaria_core/src/utils/mod.rs
@@ -3,7 +3,7 @@ pub use self::ascii::AsciiUtils;
 pub use self::kana::KanaUtils;
 pub use self::width::ConvertTarget;
 pub use self::width::WidthUtils;
-pub use self::ext::CharExtend;
+pub use crate::utils::ext::CharExtend;
 
 mod ext;
 mod chars;
diff --git a/kanaria_core/src/utils/width.rs b/kanaria_core/src/utils/width.rs
index 00d29e6..576083c 100644
--- a/kanaria_core/src/utils/width.rs
+++ b/kanaria_core/src/utils/width.rs
@@ -2,12 +2,13 @@ use crate::constants::*;
 use crate::UCSChar;
 
 bitflags! {
+#[derive(Debug, PartialEq, Copy, Clone)]
     pub struct ConvertTarget: u32 {
         const NUMBER = CONVERT_TARGET_NUMBER;
         const ALPHABET = CONVERT_TARGET_ALPHABET;
         const SYMBOL = CONVERT_TARGET_SYMBOL;
         const KATAKANA = CONVERT_TARGET_KATAKANA;
-        const ALL = (Self::NUMBER.bits | Self::ALPHABET.bits | Self::SYMBOL.bits | Self::KATAKANA.bits) as u32;
+        const ALL = (Self::NUMBER.bits() | Self::ALPHABET.bits() | Self::SYMBOL.bits() | Self::KATAKANA.bits()) as u32;
     }
 }
 
@@ -1678,4 +1679,4 @@ impl WidthUtils {
 
         return (T::from_scalar(result), is_pad);
     }
-}
\ No newline at end of file
+}
diff --git a/kanaria_extern/Cargo.toml b/kanaria_extern/Cargo.toml
index 2da6115..fa85f38 100644
--- a/kanaria_extern/Cargo.toml
+++ b/kanaria_extern/Cargo.toml
@@ -2,7 +2,7 @@
 name = "kanaria_extern"
 version = "0.1.0"
 authors = ["osamu <46447427+sam-osamu@users.noreply.github.com>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 kanaria = { path = "../kanaria_core" }
@@ -10,4 +10,4 @@ kanaria = { path = "../kanaria_core" }
 [lib]
 name = "kanaria"
 path = "src/lib.rs"
-crate-type = ["cdylib"]
\ No newline at end of file
+crate-type = ["cdylib"]
diff --git a/kanaria_jvm/src/main/rust/Cargo.toml b/kanaria_jvm/src/main/rust/Cargo.toml
index 1454a8f..f57a171 100644
--- a/kanaria_jvm/src/main/rust/Cargo.toml
+++ b/kanaria_jvm/src/main/rust/Cargo.toml
@@ -2,7 +2,7 @@
 name = "kanaria_jni"
 version = "0.1.0"
 authors = ["osamu <46447427+sam-osamu@users.noreply.github.com>"]
-edition = "2018"
+edition = "2021"
 
 [dependencies]
 kanaria = { path = "../../../../kanaria_core" }
@@ -11,4 +11,4 @@ jni = "0.14.0"
 [lib]
 name = "kanaria_jni"
 path = "src/lib.rs"
-crate-type = ["cdylib"]
\ No newline at end of file
+crate-type = ["cdylib"]