diff --git a/CHANGELOG.md b/CHANGELOG.md
index 11e6ac0..0d79ad5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 All notable changes to the LaunchDarkly Electron SDK will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org).
 
+## [1.5.7] - 2020-11-17
+### Fixed:
+- Updated the `LDEvaluationDetail.reason` type definition to be nullable. This value will be `null` when `LDOptions.evaluationReasons` is `false`.
+
 ## [1.5.6] - 2020-09-14
 ### Changed:
 - The SDK's CircleCI configuration now tests compatibility against each supported major Electron version, currently Electron 2 through 9.
diff --git a/package.json b/package.json
index 692ae3f..8b8c946 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "launchdarkly-electron-client-sdk",
-  "version": "1.5.6",
+  "version": "1.5.7",
   "description": "LaunchDarkly SDK for Electron",
   "author": "LaunchDarkly <team@launchdarkly.com>",
   "license": "Apache-2.0",