diff --git a/.github/workflows/antsibull-docs.yml b/.github/workflows/antsibull-docs.yml
index b0fcb0c..573e0d2 100644
--- a/.github/workflows/antsibull-docs.yml
+++ b/.github/workflows/antsibull-docs.yml
@@ -48,11 +48,11 @@ jobs:
           ref: main
           path: antsibull-docs
 
-      - name: Set up Python 3.11
+      - name: Set up Python 3.12
         id: python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.11'
+          python-version: '3.12'
 
       - name: Install dependencies
         env:
diff --git a/.github/workflows/antsibull.yml b/.github/workflows/antsibull.yml
index d2a3c1a..889fc91 100644
--- a/.github/workflows/antsibull.yml
+++ b/.github/workflows/antsibull.yml
@@ -49,11 +49,11 @@ jobs:
           ref: main
           path: antsibull
 
-      - name: Set up Python 3.11
+      - name: Set up Python 3.12
         id: python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.11'
+          python-version: '3.12'
 
       - name: Install dependencies
         env:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9c4e9f9..1ebc033 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 **Topics**
 
-- <a href="#v3-0-0a1">v3\.0\.0a1</a>
+- <a href="#v3-0-0">v3\.0\.0</a>
     - <a href="#release-summary">Release Summary</a>
     - <a href="#breaking-changes--porting-guide">Breaking Changes / Porting Guide</a>
     - <a href="#removed-features-previously-deprecated">Removed Features \(previously deprecated\)</a>
@@ -52,13 +52,13 @@
 - <a href="#v0-1-0">v0\.1\.0</a>
     - <a href="#release-summary-12">Release Summary</a>
 
-<a id="v3-0-0a1"></a>
-## v3\.0\.0a1
+<a id="v3-0-0"></a>
+## v3\.0\.0
 
 <a id="release-summary"></a>
 ### Release Summary
 
-First antsibull\-core v3 pre\-release
+New major release\.
 
 <a id="breaking-changes--porting-guide"></a>
 ### Breaking Changes / Porting Guide
diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 74f3c74..cb3dd30 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -4,13 +4,13 @@ antsibull-core Release Notes
 
 .. contents:: Topics
 
-v3.0.0a1
-========
+v3.0.0
+======
 
 Release Summary
 ---------------
 
-First antsibull-core v3 pre-release
+New major release.
 
 Breaking Changes / Porting Guide
 --------------------------------
diff --git a/README.md b/README.md
index 3a66d14..0142866 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,7 @@ To run specific tests:
 ## Creating a new release:
 
 1. Run `nox -e bump -- <version> <release_summary_message>`. This:
-   * Bumps the package version in `pyproject.toml`.
+   * Bumps the package version in `src/antsibull_core/__init__.py`.
    * Creates `changelogs/fragments/<version>.yml` with a `release_summary` section.
    * Runs `antsibull-changelog release` and adds the changed files to git.
    * Commits with message `Release <version>.` and runs `git tag -a -m 'antsibull-core <version>' <version>`.
diff --git a/changelogs/changelog.yaml b/changelogs/changelog.yaml
index 7b2a7d1..34704b1 100644
--- a/changelogs/changelog.yaml
+++ b/changelogs/changelog.yaml
@@ -231,6 +231,12 @@ releases:
     - 116-subprocess_util_escape.yaml
     - 2.2.0.yml
     release_date: '2023-12-01'
+  3.0.0:
+    changes:
+      release_summary: New major release.
+    fragments:
+    - 3.0.0.yml
+    release_date: '2024-03-17'
   3.0.0a1:
     changes:
       breaking_changes:
diff --git a/pyproject.toml b/pyproject.toml
index a59aa6f..fecd5de 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,7 @@ license = "GPL-3.0-or-later AND BSD-2-Clause AND MIT AND PSF-2.0"
 license-files = {globs=["LICENSES/*.txt"]}
 readme = "README.md"
 classifiers = [
-    "Development Status :: 3 - Alpha",
+    "Development Status :: 4 - Beta",
     "Framework :: Ansible",
     "Intended Audience :: Developers",
     "Programming Language :: Python :: 3",
diff --git a/src/antsibull_core/__init__.py b/src/antsibull_core/__init__.py
index b8ac8ed..5b650e7 100644
--- a/src/antsibull_core/__init__.py
+++ b/src/antsibull_core/__init__.py
@@ -9,6 +9,6 @@
 
 from __future__ import annotations
 
-__version__ = "3.0.0a1.post0"
+__version__ = "3.0.0"
 
 __all__ = ("__version__",)