diff --git a/CHANGELOG.md b/CHANGELOG.md
index fe07093..f8160ce 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,33 +1,38 @@
 # Release Note
 
-## 1.0.4
+## v1.1.0
+
+- Added `+` operator and you can combine `SweetCookieJar`s. ([#4](https://github.com/myConsciousness/sweet-cookie-jar/pull/4))
+- Fixed regex for splitting cookies. ([#2](https://github.com/myConsciousness/sweet-cookie-jar/pull/2))
+
+## v1.0.4
 
 - Fixed some documents.
 
-## 1.0.3
+## v1.0.3
 
 - Supported more multiple platforms.
 
-## 1.0.2
+## v1.0.2
 
 - Improved documents.
 
-## 1.0.1
+## v1.0.1
 
 - Improved minor features.
 
-## 1.0.0
+## v1.0.0
 
 - Just upgrade version to `1.0.0`.
 
-## 0.0.3
+## v0.0.3
 
 - Fixed minor features.
 
-## 0.0.2
+## v0.0.2
 
 - Fixed so that this library can be used from web applications.
 
-## 0.0.1
+## v0.0.1
 
 - First release!
diff --git a/lib/src/sweet_cookie_jar.dart b/lib/src/sweet_cookie_jar.dart
index 606a308..c225fda 100644
--- a/lib/src/sweet_cookie_jar.dart
+++ b/lib/src/sweet_cookie_jar.dart
@@ -85,6 +85,6 @@ abstract class SweetCookieJar {
   /// Returns true if this cookie jar contains cookie linked to [name], otherwise false.
   bool containsName({required String name});
 
-  /// Combines two [SweetCookieJar].
+  /// Combines two [SweetCookieJar]s.
   SweetCookieJar operator +(SweetCookieJar cookieJar);
 }
diff --git a/lib/src/sweet_cookie_jar_impl.dart b/lib/src/sweet_cookie_jar_impl.dart
index b2e7e19..f08e258 100644
--- a/lib/src/sweet_cookie_jar_impl.dart
+++ b/lib/src/sweet_cookie_jar_impl.dart
@@ -18,17 +18,19 @@ class SweetCookieJarImpl implements SweetCookieJar {
       return;
     }
 
-    final cookiesSplit = RegExp(
-      r"""(?<!expires=\w{3}|"|')\s*,\s*(?!"|')""",
-      caseSensitive: false,
-    );
-    for (final cookie in setCookie.split(cookiesSplit)) {
+    for (final cookie in setCookie.split(_regexSplitSetCookies)) {
       _cookies.add(Cookie.fromSetCookieValue(cookie));
     }
 
     _rawData = setCookie;
   }
 
+  /// The regex pattern for splitting the set-cookie header.
+  static final _regexSplitSetCookies = RegExp(
+    r"""(?<!expires=\w{3}|"|')\s*,\s*(?!"|')""",
+    caseSensitive: false,
+  );
+
   /// The cookies
   final List<Cookie> _cookies = [];
 
@@ -107,12 +109,13 @@ class SweetCookieJarImpl implements SweetCookieJar {
 
   @override
   SweetCookieJar operator +(SweetCookieJar cookieJar) {
-    final _response = Response.bytes(
+    final newResponse = Response.bytes(
       [],
       200,
       headers: {'set-cookie': "$rawData,${cookieJar.rawData}"},
     );
-    return SweetCookieJarImpl.from(response: _response);
+
+    return SweetCookieJarImpl.from(response: newResponse);
   }
 
   String _getSetCookie({required Response response}) {
diff --git a/pubspec.yaml b/pubspec.yaml
index 056757b..092901e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: sweet_cookie_jar
 description: A most easily usable cookie management library in Dart. With SweetCookieJar, you can easily manage cookie on your application.
-version: 1.0.4
+version: 1.1.0
 homepage: https://github.com/myConsciousness/sweet-cookie-jar
 
 environment:
@@ -13,5 +13,5 @@ dependencies:
 
 dev_dependencies:
   flutter_lints: ^1.0.0
-  import_sorter: ^4.6.0
   test: ^1.16.0
+  import_sorter: ^4.6.0