diff --git a/CHANGELOG.md b/CHANGELOG.md
index d6dca74..99abd73 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,10 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 ## [Unreleased]
 
+### Changed
+
+- **Breaking**: The Redis check now requires being configured with an instance of the Redis client, via the named `instance` parameter
+
 ### Added
 
 - The `static` check, which uses the provided check parameters to return the same result every time.
diff --git a/README.md b/README.md
index 81ba0c2..3675d0d 100644
--- a/README.md
+++ b/README.md
@@ -157,7 +157,7 @@ Requires a configured ActiveRecord connection, and that ActiveRecord migrations
 
 #### `redis`
 
-Requires a configured global Redis client. Does not support configuration. Indicates whether the global client is currently connected to the Redis database. On success, returns something in the following format:
+Requires the Redis gem. Requires configuration, an instance of a Redis client. Indicates whether the Redis client passed in is currently connected to the Redis database. On success, returns something in the following format:
 
 ```json
 {