diff --git a/404.rst b/404.rst
new file mode 100644
index 0000000000000000000000000000000000000000..8512a04083d60ec36412edd3ec851ac53d818a78
--- /dev/null
+++ b/404.rst
@@ -0,0 +1,8 @@
+.. _not-found:
+
+Document not found
+##################
+
+.. todo::
+
+   We need a 404 document to help people handle broken links (report, find, etc.).