diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 00000000..2548255f
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,58 @@
+name: Release
+
+on:
+  workflow_dispatch:
+  release:
+    types: [published]
+
+jobs:
+  build:
+    name: Build sdist and wheel
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+      name: Checkout repository
+
+    - uses: actions/setup-python@v5
+      with:
+        python-version: "3.12"
+
+    - name: Install pypa/build
+      run: >-
+        python3 -m
+        pip install
+        build
+        --user
+
+    - name: Build wheel and source tarball
+      run: python3 -m build
+
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: python-package-distributions
+        path: dist/
+        if-no-files-found: error
+
+  publish:
+    needs: [build]
+    name: Upload to PyPI
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/pyerrors
+    permissions:
+      id-token: write
+
+    steps:
+      - name: Download artifacts
+        uses: actions/download-artifact@v4
+        with:
+          name: python-package-distributions
+          path: dist/
+
+      - name: Sanity check
+        run: ls -la dist/
+
+      - name: Publish to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b59bb577..d019608c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,14 @@
 
 All notable changes to this project will be documented in this file.
 
+## [2.13.0] - 2024-11-03
+
+### Added
+- Allow providing lower triangular matrix constructed from a Cholesky decomposition in least squares function for correlated fits.
+
+### Fixed
+- Corrected bug that prevented combined fits with multiple x-obs in some cases.
+
 ## [2.12.0] - 2024-08-22
 
 ### Changed
diff --git a/pyerrors/version.py b/pyerrors/version.py
index 9b9dc340..930e2cd6 100644
--- a/pyerrors/version.py
+++ b/pyerrors/version.py
@@ -1 +1 @@
-__version__ = "2.13.0-dev"
+__version__ = "2.13.0"