diff --git a/CHANGELOG.md b/CHANGELOG.md
index fa5681a6..fa038541 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 3.8.5 - 2025-01-22
+
+1. Add tracing event to langchain callbacks.
+
 ## 3.8.4 - 2025-01-17
 
 1. Add Anthropic support for LLM Observability.
diff --git a/posthog/version.py b/posthog/version.py
index b784d3d0..9b58e337 100644
--- a/posthog/version.py
+++ b/posthog/version.py
@@ -1,4 +1,4 @@
-VERSION = "3.8.4"
+VERSION = "3.9.0"
 
 if __name__ == "__main__":
     print(VERSION, end="")  # noqa: T201