diff --git a/editions/tw5.com/tiddlywiki.info b/editions/tw5.com/tiddlywiki.info
index ddc5123a2..36f4c07e4 100644
--- a/editions/tw5.com/tiddlywiki.info
+++ b/editions/tw5.com/tiddlywiki.info
@@ -7,6 +7,7 @@
 	"themes": [
 		"tiddlywiki/vanilla",
 		"tiddlywiki/snowwhite",
+		"tiddlywiki/nighttime",
 		"tiddlywiki/starlight",
 		"tiddlywiki/stickytitles",
 		"tiddlywiki/centralised",