diff --git a/CHANGELOG.md b/CHANGELOG.md
index bb1e649..d7c1cf3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 All notable changes to the `sharpapi` Python SDK are documented here.
 
-## 0.5.0 — 2026-06-02
+## 0.4.0 — 2026-06-02
 
 ### Changed
 
@@ -13,8 +13,6 @@ All notable changes to the `sharpapi` Python SDK are documented here.
   `odds_changed_at` / `last_seen_at` / `wire_received_at` were never modeled by
   this SDK, so no model change is needed. (SHA-1048)
 
-## 0.4.0 — 2026-05-31
-
 ### Added
 
 - `OddsLine.is_active` (bool, default `True`). `False` indicates the market is
diff --git a/pyproject.toml b/pyproject.toml
index b92b4b7..338d3b8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "sharpapi"
-version = "0.5.0"
+version = "0.4.0"
 description = "Official Python SDK for the SharpAPI real-time sports betting odds API"
 readme = "README.md"
 license = "MIT"