diff --git a/pyproject.toml b/pyproject.toml
index f2e2e095..004ed258 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry]
 name = "pytwin"
-version = "0.4.dev0"
+version = "0.4.0"
 description = "A python wrapper for Ansys Digital Twin components"
 license = "MIT"
 authors = ["ANSYS, Inc. <ansys.support@ansys.com>"]
diff --git a/tests/test_metadata.py b/tests/test_metadata.py
index 12709a54..b4fd72f2 100644
--- a/tests/test_metadata.py
+++ b/tests/test_metadata.py
@@ -2,4 +2,4 @@
 
 
 def test_pkg_version():
-    assert __version__ == "0.4.dev0"
+    assert __version__ == "0.4.0"