diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0c1117f..2705612 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,10 @@
+## [1.2.1](https://github.com/amplitude/experiment-jvm-server/compare/1.2.0...1.2.1) (2023-09-19)
+
+
+### Bug Fixes
+
+* Do not track empty assignment events ([#12](https://github.com/amplitude/experiment-jvm-server/issues/12)) ([d0aa48e](https://github.com/amplitude/experiment-jvm-server/commit/d0aa48e14da97c887c8ea716d8fe63ea022e5608))
+
 # [1.2.0](https://github.com/amplitude/experiment-jvm-server/compare/1.1.0...1.2.0) (2023-08-29)
 
 
diff --git a/build.gradle.kts b/build.gradle.kts
index d4ebdf0..aa614b0 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -31,7 +31,7 @@ dependencies {
 // Publishing
 
 group = "com.amplitude"
-version = "1.2.0"
+version = "1.2.1"
 
 nexusPublishing {
     repositories {
diff --git a/src/main/kotlin/Experiment.kt b/src/main/kotlin/Experiment.kt
index a8cc341..251f075 100644
--- a/src/main/kotlin/Experiment.kt
+++ b/src/main/kotlin/Experiment.kt
@@ -4,7 +4,7 @@ import com.amplitude.experiment.util.Logger
 import com.amplitude.experiment.util.SystemLogger
 import java.util.concurrent.Executors
 
-internal const val LIBRARY_VERSION = "1.2.0"
+internal const val LIBRARY_VERSION = "1.2.1"
 
 object Experiment {