diff --git a/releasenotes/source/index.rst b/releasenotes/source/index.rst
index ce29994..eb061a4 100644
--- a/releasenotes/source/index.rst
+++ b/releasenotes/source/index.rst
@@ -6,6 +6,7 @@
    :maxdepth: 1
 
    unreleased
+   v0.4.0
    v0.3.0
    v0.2.0
    v0.1.0
diff --git a/releasenotes/source/v0.4.0.rst b/releasenotes/source/v0.4.0.rst
new file mode 100644
index 0000000..2ed32ff
--- /dev/null
+++ b/releasenotes/source/v0.4.0.rst
@@ -0,0 +1,6 @@
+====================
+v0.4.0 Release Notes
+====================
+
+.. release-notes:: 0.4.0 Release Notes
+   :version: 0.4.0