diff --git a/Bugsnag/Assets/Bugsnag/Runtime/AssemblyInfo.cs b/Bugsnag/Assets/Bugsnag/Runtime/AssemblyInfo.cs
index e427edf3..9dcda8eb 100644
--- a/Bugsnag/Assets/Bugsnag/Runtime/AssemblyInfo.cs
+++ b/Bugsnag/Assets/Bugsnag/Runtime/AssemblyInfo.cs
@@ -1,2 +1,2 @@
 using System.Reflection;
-[assembly: AssemblyVersion("8.4.0.0")]
\ No newline at end of file
+[assembly: AssemblyVersion("8.5.0.0")]
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index cbf1ca93..aa951551 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## TBD
+## 8.5.0 (2025-27-01)
 
 You can now automatically upload all your Android and iOS files for stacktrace symbolication in a few simple steps. Please see our online docs for information on how to enable this feature or script it yourself: https://docs.bugsnag.com/platforms/unity/showing-full-stacktraces/
 
@@ -8,7 +8,7 @@ You can now automatically upload all your Android and iOS files for stacktrace s
 
 - Add auto symbol uploads for Android and Xcode builds. [#871](https://github.com/bugsnag/bugsnag-unity/pull/871)
 
-## 8.4.0 (2025-12-1)
+## 8.4.0 (2025-12-01)
 
 ### Enhancements