diff --git a/CHANGELOG.md b/CHANGELOG.md
index d62c64a..e8f35d2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,7 @@
 # Changelog
 
-## Unreleased (2022-09-21)
-[Compare the full difference.](https://github.com/jazzband/django-categories/compare/1.8.0...HEAD)
+## 1.9.0 (2022-09-21)
+[Compare the full difference.](https://github.com/jazzband/django-categories/compare/1.8.0...1.9.0)
 
 ### Fixes
 
@@ -59,6 +59,13 @@
     
 - Test also in Dango 4.1. [9ffb60f](https://github.com/jazzband/django-categories/commit/9ffb60fa041ab64c37e30b2c54985b85683931e8)
     
+- [pre-commit.ci] auto fixes from pre-commit.com hooks. [ac3cd17](https://github.com/jazzband/django-categories/commit/ac3cd17f9e70de3b2ef56bd1dc54bf98c1200eb9)
+    
+  for more information, see https://pre-commit.ci
+- [pre-commit.ci] pre-commit autoupdate. [af2115d](https://github.com/jazzband/django-categories/commit/af2115d7a0fc3d8bfd2e6f264068ab220dbee77b)
+    
+  **updates:** - https://github.com/timothycrosley/isort → https://github.com/PyCQA/isort
+
 - Adjusted makefile for github action commit. [13b4cdc](https://github.com/jazzband/django-categories/commit/13b4cdc981fe762d4f44d924b089d18f169d6e61)
     
 - Debugging the doc generation process. [4d19a7a](https://github.com/jazzband/django-categories/commit/4d19a7a0678965702205f91768d32536b8fa47fe)
@@ -89,6 +96,10 @@
   for more information, see https://pre-commit.ci
 ### Updates
 
+- Updated version replacement. [18aa820](https://github.com/jazzband/django-categories/commit/18aa8201e7e61ffbadd2d0f2eb38b8bf5f1098b8)
+    
+- Changed changelog generation and version handling. [7b3f540](https://github.com/jazzband/django-categories/commit/7b3f5400a28392df662d690016cc90829da3b4e9)
+    
 - Update GitHub test config: don't fail fast, use Python 3.10. [653714c](https://github.com/jazzband/django-categories/commit/653714c5bb5d3d13e7c3cd0f95bc62bd9ab62d8b)
     
 - Updated the workflow. [82298af](https://github.com/jazzband/django-categories/commit/82298af6bc6683b8a6ae353d5a9e1ce9c626b874)
@@ -121,6 +132,8 @@
     
 - Updates URL of the project to Jazzband. #164. [75d2215](https://github.com/jazzband/django-categories/commit/75d221545585bdf0dfa9ae1387341130fc37c303)
     
+
+
 ## 1.8.0 (2020-08-31)
 [Compare the full difference.](https://github.com/jazzband/django-categories/compare/1.7.2...1.8.0)
 
diff --git a/categories/__init__.py b/categories/__init__.py
index 509879e..5b83e33 100644
--- a/categories/__init__.py
+++ b/categories/__init__.py
@@ -1,5 +1,5 @@
 """Django categories."""
-__version__ = "1.8.0"
+__version__ = "1.9.0"
 
 
 default_app_config = "categories.apps.CategoriesConfig"
diff --git a/setup.cfg b/setup.cfg
index b412e9a..c944b19 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,3 +1,14 @@
+[bumpversion]
+current_version = 1.9.0
+commit = True
+tag = False
+tag_name = {new_version}
+parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\+\w+-(?P<dev>\d+))?
+serialize = 
+	{major}.{minor}.{patch}+{$USER}-{dev}
+	{major}.{minor}.{patch}
+message = Version updated from {current_version} to {new_version}
+
 [metadata]
 name = django-categories
 version = 1.8.0
@@ -7,48 +18,37 @@ long_description_content_type = "text/markdown"
 author = Corey Oordt
 author_email = coreyoordt@gmail.com
 url = http://github.com/jazzband/django-categories
-classifiers =
-    Framework :: Django
+classifiers = 
+	Framework :: Django
 
 [options]
-zip_safe=False
-include_package_data=True
+zip_safe = False
+include_package_data = True
 
 [options.packages.find]
-exclude =
-    example*
-    docs
-    build
+exclude = 
+	example*
+	docs
+	build
 include = categories
 
 [flake8]
 ignore = D203,W503,E501
-exclude =
-    .git
-    .tox
-    docs
-    build
-    dist
-    doc_src
+exclude = 
+	.git
+	.tox
+	docs
+	build
+	dist
+	doc_src
 max-line-length = 119
 
 [darglint]
-ignore=DAR402
+ignore = DAR402
 
 [bdist_wheel]
 universal = 1
 
-[bumpversion]
-current_version = 1.8.0
-commit = True
-tag = False
-tag_name = {new_version}
-parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(\+\w+-(?P<dev>\d+))?
-serialize =
-	{major}.{minor}.{patch}+{$USER}-{dev}
-	{major}.{minor}.{patch}
-message = Version updated from {current_version} to {new_version}
-
 [bumpversion:part:dev]
 
 [bumpversion:file:setup.cfg]