diff --git a/CHANGELOG.md b/CHANGELOG.md
index ce3f2ae..f690471 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## [0.5.2](https://github.com/amplitude/experiment-php-server/compare/0.5.1...0.5.2) (2024-03-20)
+
+
+### Bug Fixes
+
+* add time field to Assignment event ([#17](https://github.com/amplitude/experiment-php-server/issues/17)) ([ae78a13](https://github.com/amplitude/experiment-php-server/commit/ae78a130e2d711e6642ce9f226fb949254126d2d))
+
 ## [0.5.1](https://github.com/amplitude/experiment-php-server/compare/0.5.0...0.5.1) (2024-02-22)
 
 
diff --git a/src/Version.php b/src/Version.php
index 87af575..ef0cbf5 100644
--- a/src/Version.php
+++ b/src/Version.php
@@ -1,3 +1,3 @@
 <?php
 namespace AmplitudeExperiment;
-const VERSION = '0.5.1';
+const VERSION = '0.5.2';