diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a85081..89b10d2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,11 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased][unreleased]
 
+## [2.2.1] - 2021-03-08
+
+- [#198](https://github.com/SparkPost/php-sparkpost/pull/198)
+- [#191](https://github.com/SparkPost/php-sparkpost/pull/191)
+
 ## [2.2.0] - 2019-06-04
 - [#187](https://github.com/SparkPost/php-sparkpost/pull/169) Updated composer.json
 - [#169](https://github.com/SparkPost/php-sparkpost/pull/169) Optional automatic retry on 5xx
@@ -103,7 +108,8 @@ This major release included a complete refactor of the library to be a thin HTTP
 ### Fixed
 - README now has proper code blocks denoting PHP language
 
-[unreleased]: https://github.com/sparkpost/php-sparkpost/compare/2.2.0...HEAD
+[unreleased]: https://github.com/sparkpost/php-sparkpost/compare/2.2.1...HEAD
+[2.2.1]: https://github.com/sparkpost/php-sparkpost/compare/2.2.0...2.2.1
 [2.2.0]: https://github.com/sparkpost/php-sparkpost/compare/2.1.0...2.2.0
 [2.1.0]: https://github.com/sparkpost/php-sparkpost/compare/2.0.3...2.1.0
 [2.0.3]: https://github.com/sparkpost/php-sparkpost/compare/2.0.2...2.0.3
diff --git a/README.md b/README.md
index c2fbf61..8150250 100644
--- a/README.md
+++ b/README.md
@@ -56,6 +56,17 @@ Http\Discovery\Exception\PuliUnavailableException: Puli Factory is not available
 
 [This is usual](http://docs.php-http.org/en/latest/discovery.html#puli-factory-is-not-available). Puli is not required to use the library. You can resume running after the exception.
 
+You can prevent the exception, by setting the discovery strategies, prior to creating the adapter object:
+```php
+// Prevent annoying "Puli exception" during work with xdebug / IDE
+// See https://github.com/getsentry/sentry-php/issues/801
+\Http\Discovery\ClassDiscovery::setStrategies([
+        // \Http\Discovery\Strategy\PuliBetaStrategy::class, // Deliberately disabled
+        \Http\Discovery\Strategy\CommonClassesStrategy::class,
+        \Http\Discovery\Strategy\CommonPsr17ClassesStrategy::class,
+]);
+```
+
 ## Setting up a Request Adapter
 
 Because of dependency collision, we have opted to use a request adapter rather than