diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1c648f4d..4a6b8646 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Backtrace Unity Release Notes
 
+## Version 3.9.1
+
+Bugfixes
+- Fixed potential overflow that can happen during breadcrumb deletion flow (#220)
+- Added proguard support for Android uncaught exception captured by the Unity uncaught exception handler (#221)
+
+Improvements
+- Native crash reporting binary upgrade - PlCrashReporter upgrade from 1.7.2 to 1.11.2 (#222)
+- iOS crash handler: store client attributes in the PlCrashReporter crashData object.
+- iOS native attributes: Renaming process.vm.* attributes to vm.*
+
 ## Version 3.9.0
 
 Bugfixes
diff --git a/Runtime/BacktraceClient.cs b/Runtime/BacktraceClient.cs
index df8570a8..3bf1e4f7 100644
--- a/Runtime/BacktraceClient.cs
+++ b/Runtime/BacktraceClient.cs
@@ -24,7 +24,7 @@ namespace Backtrace.Unity
     /// </summary>
     public class BacktraceClient : MonoBehaviour, IBacktraceClient
     {
-        public const string VERSION = "3.9.0";
+        public const string VERSION = "3.9.1";
         internal const string DefaultBacktraceGameObjectName = "BacktraceClient";
         public BacktraceConfiguration Configuration;
 
diff --git a/package.json b/package.json
index 1ff1ce2b..5f7a4805 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "io.backtrace.unity",
   "displayName": "Backtrace",
-  "version": "3.9.0",
+  "version": "3.9.1",
   "unity": "2017.1",
   "description": "Backtrace's integration with Unity games allows customers to capture and report handled and unhandled Unity exceptions to their Backtrace instance, instantly offering the ability to prioritize and debug software errors.",
   "keywords": [