diff --git a/templates/prod-warning.html b/templates/prod-warning.html
new file mode 100644
index 0000000..35c1bd9
--- /dev/null
+++ b/templates/prod-warning.html
@@ -0,0 +1,6 @@
+
+ This is a development version of the Private.coffee website. For the live
+ version, please visit
+
https://private.coffee.
+