diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5240a1e..a2b9acc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,16 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.0.0] - 2026-06-16
+
+First stable release. No functional changes since `0.2.0` — this tags the API as
+stable under [Semantic Versioning](https://semver.org/spec/v2.0.0.html). The
+public API is the documented surface of `AxeCuprite`, `AxeCuprite::Configuration`,
+`AxeCuprite::Runner`, the result wrappers (`Results`/`Violation`/`Node`/
+`ContrastData`), the error classes, and the RSpec matcher DSL; classes such as
+`AxeCuprite::Injector` and `AxeCuprite::DeepFreeze` are internal and not covered
+by the stability guarantee.
+
 ### Fixed
 - The packaged gem no longer ships the dev-only vendoring rake tasks
   (`lib/axe/cuprite/tasks/*.rake` — `axe:update` / `axe:verify` / `axe:version`).
@@ -129,3 +139,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   auto-inject toggle, and report-only mode.
 - `rake axe:update[VERSION]` to refresh the vendored axe-core engine and bump
   the `AXE_CORE_VERSION` constant.
+
+[Unreleased]: https://github.com/Guided-Rails/axe-cuprite/compare/v1.0.0...HEAD
+[1.0.0]: https://github.com/Guided-Rails/axe-cuprite/compare/v0.2.0...v1.0.0
+[0.2.0]: https://github.com/Guided-Rails/axe-cuprite/compare/v0.1.1...v0.2.0
+[0.1.1]: https://github.com/Guided-Rails/axe-cuprite/compare/v0.1.0...v0.1.1
+[0.1.0]: https://github.com/Guided-Rails/axe-cuprite/releases/tag/v0.1.0
diff --git a/README.md b/README.md
index 8f9557c..d62ad4e 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,9 @@
 # axe-cuprite
 
+[![Gem Version](https://img.shields.io/gem/v/axe-cuprite)](https://rubygems.org/gems/axe-cuprite)
+[![CI](https://github.com/Guided-Rails/axe-cuprite/actions/workflows/ci.yml/badge.svg)](https://github.com/Guided-Rails/axe-cuprite/actions/workflows/ci.yml)
+[![License: MIT](https://img.shields.io/badge/license-MIT-blue.svg)](LICENSE.txt)
+
 Run the [axe-core](https://github.com/dequelabs/axe-core) accessibility engine
 against pages in your **Capybara system/feature tests driven by
 [Cuprite](https://github.com/rubycdp/cuprite)** (the CDP/Ferrum headless-Chrome
@@ -33,6 +37,14 @@ best-effort fallback exists), but they are unsupported and untested.
 There is no runtime dependency on Selenium, Cuprite, or Ferrum — the only runtime
 dependency is Capybara. You bring your own driver.
 
+## Requirements
+
+- **Ruby** >= 3.0
+- **Capybara** >= 3.0, < 4.0 (the only runtime dependency)
+- **[Cuprite](https://github.com/rubycdp/cuprite)** as the Capybara driver — the
+  only supported and tested driver
+- **Chrome or Chromium**, which Cuprite drives over CDP
+
 ## Installation
 
 ```ruby
@@ -263,6 +275,22 @@ sha512 of the vendored engine is recorded in
 with `rake axe:verify` (CI does this on every run). Note the bump in
 `CHANGELOG.md`.
 
+## Versioning
+
+axe-cuprite follows [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+The **public API** covered by that guarantee is the documented surface:
+`AxeCuprite` (module methods), `AxeCuprite::Configuration`, `AxeCuprite::Runner`,
+the result wrappers (`Results` / `Violation` / `Node` / `ContrastData`), the error
+classes, and the RSpec matcher DSL (`be_axe_clean` / `be_accessible` and its
+chainers). Classes like `AxeCuprite::Injector` and `AxeCuprite::DeepFreeze` are
+internal implementation details and may change in any release. Breaking changes to
+the public API only land in a major version, and every release is noted in
+[`CHANGELOG.md`](CHANGELOG.md).
+
+Note that the **vendored axe-core version** can change in a minor release; axe may
+report new violations after an engine bump, which can turn a previously-green
+suite red. Such bumps are always called out in the changelog.
+
 ## Licensing
 
 - **axe-cuprite's own code** is licensed under the **MIT** license — see
diff --git a/axe-cuprite.gemspec b/axe-cuprite.gemspec
index dc50141..455e916 100644
--- a/axe-cuprite.gemspec
+++ b/axe-cuprite.gemspec
@@ -24,6 +24,8 @@ Gem::Specification.new do |spec|
 
   spec.metadata["source_code_uri"]   = spec.homepage
   spec.metadata["changelog_uri"]     = "#{spec.homepage}/blob/main/CHANGELOG.md"
+  spec.metadata["bug_tracker_uri"]   = "#{spec.homepage}/issues"
+  spec.metadata["documentation_uri"] = "#{spec.homepage}/blob/main/README.md"
   spec.metadata["rubygems_mfa_required"] = "true"
 
   spec.files = Dir[
diff --git a/lib/axe/cuprite.rb b/lib/axe/cuprite.rb
index 5cecba8..3e0438f 100644
--- a/lib/axe/cuprite.rb
+++ b/lib/axe/cuprite.rb
@@ -8,8 +8,10 @@
 require "axe/cuprite/runner"
 
 # axe-cuprite drives the axe-core accessibility engine through Capybara's
-# driver-neutral JavaScript API, so it works with Cuprite (Ferrum/CDP) and any
-# other real-browser Capybara driver.
+# driver-neutral JavaScript API. That approach is what lets it avoid Selenium
+# internals and work on Cuprite (Ferrum/CDP) — the only supported and tested
+# driver. Other real-browser drivers may work via a best-effort, untested
+# fallback, but they are unsupported.
 #
 # Quick start:
 #
diff --git a/lib/axe/cuprite/version.rb b/lib/axe/cuprite/version.rb
index ad198be..032a3c2 100644
--- a/lib/axe/cuprite/version.rb
+++ b/lib/axe/cuprite/version.rb
@@ -2,7 +2,7 @@
 
 module AxeCuprite
   # Version of the axe-cuprite gem itself.
-  VERSION = "0.2.0"
+  VERSION = "1.0.0"
 
   # Version of the axe-core engine vendored under lib/axe/cuprite/vendor/axe.min.js.
   # Keep this in sync with the vendored file via `rake axe:update`.