diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000..c88a062
Binary files /dev/null and b/.DS_Store differ
diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 7ce2103..45908c3 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -3,10 +3,10 @@ name: build
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
     branches:
-      - master
+      - main
 
 jobs:
   lint:
@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python: ['3.7', '3.8', '3.9', '3.10', '3.11']
+        python: ['3.8', '3.9', '3.10', '3.11', '3.12']
       fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/CHANGES.rst b/CHANGES.rst
index 0a93c40..14acf08 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -4,18 +4,17 @@ Changelog
 1.0.0
 -----
 
-Release date: -
+Release date: 2024/7/5
 
-- Disable the version check for old CKEditor versions.
-
-
-0.5.2
------
+Since CKEditor 4 is no longer maintained, this release is the last major release of Flask-CKEditor.
 
-Release date: N/A
+There will be no new features added to this package, only bug fixes will be provided.
 
 - Add ``cleanify`` function to ``flask_ckeditor.utils`` for HTML sanitization.
-
+- Disable the version check for old CKEditor versions.
+- Update the default CDN library version to 4.22.1.
+- Drop Python 3.7 support and add 3.12 support.
+- Fix the missing bundled CKEditor resources.
 
 0.5.1
 -----
diff --git a/README.md b/README.md
index 2c9dc21..45cd8f5 100644
--- a/README.md
+++ b/README.md
@@ -9,8 +9,9 @@
 CKEditor integration for Flask, including image upload, code syntax highlighting, and more.
 
 > [!IMPORTANT]\
-> This project is unmaintained due to the CKEditor 4's end of life, and we will not support CKEditor 5 (GPL licensed).
-> Please consider using paid CKEditor 4 LTS version, CKEditor 5, or other alternatives. Thanks!
+> Since CKEditor 4's end of life, and we will not support CKEditor 5 (GPL licensed).
+> This project is in maintainance mode now. There will be no new features, only bug fixes.
+> For security reasons, please consider using paid CKEditor 4 LTS version, CKEditor 5, or other alternatives.
 
 ## Links
 
diff --git a/flask_ckeditor/__init__.py b/flask_ckeditor/__init__.py
index 8d9f2ba..a4fe820 100644
--- a/flask_ckeditor/__init__.py
+++ b/flask_ckeditor/__init__.py
@@ -14,7 +14,7 @@ class _CKEditor(object):
     """The class implement functions for Jinja2 template."""
 
     @staticmethod
-    def load(custom_url=None, pkg_type=None, serve_local=None, version='4.14.0'):
+    def load(custom_url=None, pkg_type=None, serve_local=None, version='4.22.1'):
         """Load CKEditor resource from CDN or local.
 
         :param custom_url: The custom resource url to use, build your CKEditor
diff --git a/setup.py b/setup.py
index a1607a7..a60231b 100644
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,7 @@
 
 setup(
     name='Flask-CKEditor',
-    version='1.0.0-dev',
+    version='1.0.0',
     url='http://github.com/helloflask/flask-ckeditor',
     license='MIT',
     author='Grey Li',
@@ -43,11 +43,11 @@
         'Operating System :: OS Independent',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
+        'Programming Language :: Python :: 3.12',
         'Topic :: Internet :: WWW/HTTP :: Dynamic Content',
         'Topic :: Software Development :: Libraries :: Python Modules'
     ]
diff --git a/tox.ini b/tox.ini
index 95abc78..5b1043d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py37, py38, py39, py310, py311, docs
+envlist = py38, py39, py310, py311, py312, docs
 skip_missing_interpreters = true
 # skipsdist = true