diff --git a/CHANGELOG.md b/CHANGELOG.md
index d9c52c6..02b82c6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## [1.2.2](https://github.com/amplitude/experiment-go-server/compare/v1.2.1...v1.2.2) (2023-09-19)
+
+
+### Bug Fixes
+
+* Do not track empty assignment events ([#17](https://github.com/amplitude/experiment-go-server/issues/17)) ([fcb0102](https://github.com/amplitude/experiment-go-server/commit/fcb01021f7cf6e86d40f32ec542c0508f1d5efec))
+
 ## [1.2.1](https://github.com/amplitude/experiment-go-server/compare/v1.2.0...v1.2.1) (2023-08-29)
 
 
diff --git a/pkg/experiment/types.go b/pkg/experiment/types.go
index e355efc..2fc096b 100644
--- a/pkg/experiment/types.go
+++ b/pkg/experiment/types.go
@@ -1,6 +1,6 @@
 package experiment
 
-const VERSION = "1.2.1"
+const VERSION = "1.2.2"
 
 type User struct {
 	UserId             string                 `json:"user_id,omitempty"`