diff --git a/HISTORY.md b/HISTORY.md
index dc032fa..1a70a91 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -1,4 +1,4 @@
-# Unreleased
+# 2.4.0 / 2026-9-28
 
 ### Upgrade note: new request headers
 
diff --git a/pyproject.toml b/pyproject.toml
index e4e5ba1..79b7600 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "segment-analytics-python"
-version = "2.3.6"
+version = "2.4.0"
 description = "The hassle-free way to integrate analytics into any python application."
 readme = "README.md"
 license = "MIT"
diff --git a/segment/analytics/version.py b/segment/analytics/version.py
index 2c6bcca..02c476a 100644
--- a/segment/analytics/version.py
+++ b/segment/analytics/version.py
@@ -1 +1 @@
-VERSION = "2.3.6"
+VERSION = "2.4.0"