diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 4d20436..50af31c 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    ".": "4.0.0"
+    ".": "4.0.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 866a5f5..ced8d8c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## [4.0.1](https://github.com/Flagsmith/flagsmith-python-client/compare/v4.0.0...v4.0.1) (2025-09-19)
+
+### Bug Fixes
+
+- Environment name not mapped to evaluation context
+  ([#153](https://github.com/Flagsmith/flagsmith-python-client/issues/153))
+  ([3fcae7c](https://github.com/Flagsmith/flagsmith-python-client/commit/3fcae7c13fb36428ad8137195916f102e39e9453))
+- Feature state `django_id` fields are not handled
+  ([#156](https://github.com/Flagsmith/flagsmith-python-client/issues/156))
+  ([860b630](https://github.com/Flagsmith/flagsmith-python-client/commit/860b6303cb310166d4bc740fcd8213f4c92164dd))
+
 ## [4.0.0](https://github.com/Flagsmith/flagsmith-python-client/compare/v3.10.1...v4.0.0) (2025-09-02)
 
 ### ⚠ BREAKING CHANGES
diff --git a/pyproject.toml b/pyproject.toml
index efdc810..decf306 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "flagsmith"
-version = "4.0.0"
+version = "4.0.1"
 description = "Flagsmith Python SDK"
 authors = ["Flagsmith <support@flagsmith.com>"]
 license = "BSD3"