diff --git a/CHANGELOG.md b/CHANGELOG.md
index 690c385..547e35c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,5 @@
+## v0.8.4 (2026-08-11)
+
 ## v0.8.3 (2026-07-14)
 
 ### Fix
diff --git a/pyproject.toml b/pyproject.toml
index 3d59f6a..3d799e5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -25,7 +25,7 @@ Issues = "https://github.com/NHSDigital/data-validation-engine/issues"
 Changelog = "https://github.com/NHSDigital/data-validation-engine/blob/main/CHANGELOG.md"
 
 [tool.poetry]
-version = "0.8.3"
+version = "0.8.4"
 packages = [
     { include = "dve", from = "src" },
 ]