diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9c424663..37abb91f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Optimizely Android X SDK Changelog
 
+## 5.2.1
+May 28, 2026
+
+### Fixes
+
+- Upgrade dependency to [Java SDK 4.4.1](https://github.com/optimizely/java-sdk/releases/tag/v4.4.1)
+  - Block ODP identify event for single identifier
+
 ## 5.2.0
 May 8, 2026
 
diff --git a/README.md b/README.md
index 78ee9b48..de01f853 100644
--- a/README.md
+++ b/README.md
@@ -32,7 +32,7 @@ repositories {
 }
 
 dependencies {
-	implementation 'com.optimizely.ab:android-sdk:5.2.0'
+	implementation 'com.optimizely.ab:android-sdk:5.2.1'
 }
 ```
 
diff --git a/build.gradle b/build.gradle
index b8f8b720..dc15f2ee 100644
--- a/build.gradle
+++ b/build.gradle
@@ -97,7 +97,7 @@ ext {
     build_tools_version = "35.0.0"
     min_sdk_version = 21
     target_sdk_version = 35
-    java_core_ver = "4.4.0"
+    java_core_ver = "4.4.1"
     android_logger_ver = "1.3.6"
     jacksonversion= "2.11.2"
     annotations_ver = "1.2.0"