diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md
index e883f2e6..58110d0f 100644
--- a/.github/CONTRIBUTING.md
+++ b/.github/CONTRIBUTING.md
@@ -101,11 +101,13 @@ markdown-toc -i --maxdepth 3 --bullets='-' README.md
 
 ## Releases
 
-1. Prepare the appropriate "stable" branch for release, eg. `10-stable`
-  1. git checkout 10-stable
-  1. Checkout a new branch, eg. `release-10.3.0`
-  1. Merge the relevant changes from `master`. This could be a plain merge, or
-    it could be cherry-picking. The later is more common in backports.
+The X-stable branches, e.g. 15-stable, are no longer maintained; not worth the
+effort given that we only maintain the latest version. Ie. haven't done a
+backport in a very long time.
+
+1. Prepare release PR
+  1. Checkout a new branch, eg. `release-15.1.0`
+  1. Merge the relevant changes from `master`
   1. Set the version in `lib/paper_trail/version_number.rb`
   1. In the changelog,
     - Replace "Unreleased" with the date in ISO-8601 format
@@ -113,18 +115,13 @@ markdown-toc -i --maxdepth 3 --bullets='-' README.md
   1. In the readme, update references to version number, including
     - list of documentation versions
     - compatability table, if necessary
-  1. git commit -am 'Release 10.3.0'
-  1. git push -u origin release-10.3.0
-  1. Pull request into `10-stable`, CI pass, merge PR
+  1. git commit -am 'Release 15.1.0'
+  1. git push -u origin release-15.1.0
+  1. Pull request into `master`, CI pass, merge PR
 1. Release
-  1. git checkout 10-stable && git pull
   1. gem build paper_trail.gemspec
-  1. gem push paper_trail-10.3.0.gem
-  1. git tag -a -m "v10.3.0" "v10.3.0" # or whatever number
+  1. gem push paper_trail-15.1.0.gem
+  1. git tag -a -m "v15.1.0" "v15.1.0" # or whatever number
   1. git push --tags origin
-1. Cleanup
-  1. git checkout master
-  1. cherry-pick the "Release 10.3.0" commit from the `10-stable` branch
-  1. git push origin master
 
 [1]: https://github.com/paper-trail-gem/paper_trail/blob/master/.github/ISSUE_TEMPLATE/bug-report.md
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b546fa2f..f177347b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,20 @@ recommendations of [keepachangelog.com](http://keepachangelog.com/).
 
 - None
 
+### Added
+
+- None
+
+### Fixed
+
+- None
+
+## 15.1.0 (2023-10-22)
+
+### Breaking Changes
+
+- None
+
 ### Fixed
 
 - None
diff --git a/README.md b/README.md
index a0562d8b..00760fad 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ This is the _user guide_. See also, the
 
 Choose version:
 [Unreleased](https://github.com/paper-trail-gem/paper_trail/blob/master/README.md),
-[15.0](https://github.com/paper-trail-gem/paper_trail/blob/v15.0.0/README.md),
+[15.1](https://github.com/paper-trail-gem/paper_trail/blob/v15.1.0/README.md),
 [14.0](https://github.com/paper-trail-gem/paper_trail/blob/v14.0.0/README.md),
 [13.0](https://github.com/paper-trail-gem/paper_trail/blob/v13.0.0/README.md),
 [12.3](https://github.com/paper-trail-gem/paper_trail/blob/v12.3.0/README.md),
@@ -90,24 +90,24 @@ Choose version:
 
 ### 1.a. Compatibility
 
-| paper_trail | branch     | ruby     | activerecord  |
-|-------------|------------|----------|---------------|
-| unreleased  | master     | >= 3.0.0 | >= 6.1, < 7.2 |
-| 15          | 15-stable  | >= 3.0.0 | >= 6.1, < 7.1 |
-| 14          | 14-stable  | >= 2.7.0 | >= 6.0, < 7.1 |
-| 13          | 13-stable  | >= 2.6.0 | >= 5.2, < 7.1 |
-| 12          | 12-stable  | >= 2.6.0 | >= 5.2, < 7.1 |
-| 11          | 11-stable  | >= 2.4.0 | >= 5.2, < 6.1 |
-| 10          | 10-stable  | >= 2.3.0 | >= 4.2, < 6.1 |
-| 9           | 9-stable   | >= 2.3.0 | >= 4.2, < 5.3 |
-| 8           | 8-stable   | >= 2.2.0 | >= 4.2, < 5.2 |
-| 7           | 7-stable   | >= 2.1.0 | >= 4.0, < 5.2 |
-| 6           | 6-stable   | >= 1.9.3 | >= 4.0, < 5.2 |
-| 5           | 5-stable   | >= 1.9.3 | >= 3.0, < 5.1 |
-| 4           | 4-stable   | >= 1.8.7 | >= 3.0, < 5.1 |
-| 3           | 3.0-stable | >= 1.8.7 | >= 3.0, < 5   |
-| 2           | 2.7-stable | >= 1.8.7 | >= 3.0, < 4   |
-| 1           | rails2     | >= 1.8.7 | >= 2.3, < 3   |
+| paper_trail | ruby     | activerecord  |
+|-------------|----------|---------------|
+| unreleased  | >= 3.0.0 | >= 6.1, < 7.2 |
+| 15          | >= 3.0.0 | >= 6.1, < 7.2 |
+| 14          | >= 2.7.0 | >= 6.0, < 7.1 |
+| 13          | >= 2.6.0 | >= 5.2, < 7.1 |
+| 12          | >= 2.6.0 | >= 5.2, < 7.1 |
+| 11          | >= 2.4.0 | >= 5.2, < 6.1 |
+| 10          | >= 2.3.0 | >= 4.2, < 6.1 |
+| 9           | >= 2.3.0 | >= 4.2, < 5.3 |
+| 8           | >= 2.2.0 | >= 4.2, < 5.2 |
+| 7           | >= 2.1.0 | >= 4.0, < 5.2 |
+| 6           | >= 1.9.3 | >= 4.0, < 5.2 |
+| 5           | >= 1.9.3 | >= 3.0, < 5.1 |
+| 4           | >= 1.8.7 | >= 3.0, < 5.1 |
+| 3           | >= 1.8.7 | >= 3.0, < 5   |
+| 2           | >= 1.8.7 | >= 3.0, < 4   |
+| 1           | >= 1.8.7 | >= 2.3, < 3   |
 
 Experts: to install incompatible versions of activerecord, see
 `paper_trail/compatibility.rb`.
diff --git a/lib/paper_trail/version_number.rb b/lib/paper_trail/version_number.rb
index ebba0754..93719bf3 100644
--- a/lib/paper_trail/version_number.rb
+++ b/lib/paper_trail/version_number.rb
@@ -8,7 +8,7 @@ module PaperTrail
   # People are encouraged to use `PaperTrail.gem_version` instead.
   module VERSION
     MAJOR = 15
-    MINOR = 0
+    MINOR = 1
     TINY = 0
 
     # Set PRE to nil unless it's a pre-release (beta, rc, etc.)