diff --git a/CHANGELOG.md b/CHANGELOG.md
index 526c030..8c16f6a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
 # Change log
 
 All notable changes to the LaunchDarkly SSE Client for Python will be documented in this file. This project adheres to [Semantic Versioning](http://semver.org).
+
+## [1.0.0] - 2023-01-04
+Initial release.
diff --git a/ld_eventsource/version.py b/ld_eventsource/version.py
index adc0376..d53a4e2 100644
--- a/ld_eventsource/version.py
+++ b/ld_eventsource/version.py
@@ -1,2 +1,2 @@
 
-VERSION = "0.0.1"
+VERSION = "1.0.0"