diff --git a/editions/full/tiddlywiki.info b/editions/full/tiddlywiki.info
index bed5a65be..e892099c3 100644
--- a/editions/full/tiddlywiki.info
+++ b/editions/full/tiddlywiki.info
@@ -54,6 +54,8 @@
 	"themes": [
 		"tiddlywiki/centralised",
 		"tiddlywiki/tight",
+		"tiddlywiki/heavier",
+		"tiddlywiki/tight-heavier",
 		"tiddlywiki/readonly",
 		"tiddlywiki/seamless",
 		"tiddlywiki/snowwhite",
diff --git a/editions/prerelease/tiddlywiki.info b/editions/prerelease/tiddlywiki.info
index 3e214694f..040ca13c0 100644
--- a/editions/prerelease/tiddlywiki.info
+++ b/editions/prerelease/tiddlywiki.info
@@ -22,6 +22,7 @@
 		"tiddlywiki/centralised",
 		"tiddlywiki/heavier",
 		"tiddlywiki/tight",
+		"tiddlywiki/tight-heavier",
 		"tiddlywiki/readonly"
 	],
 	"languages": [
diff --git a/editions/tw5.com/tiddlywiki.info b/editions/tw5.com/tiddlywiki.info
index faa54fc1d..13b81cbd0 100644
--- a/editions/tw5.com/tiddlywiki.info
+++ b/editions/tw5.com/tiddlywiki.info
@@ -15,6 +15,7 @@
 		"tiddlywiki/centralised",
 		"tiddlywiki/tight",
 		"tiddlywiki/heavier",
+		"tiddlywiki/tight-heavier",
 		"tiddlywiki/readonly"
 	],
 	"languages": [
diff --git a/themes/tiddlywiki/tight-heavier/base.tid b/themes/tiddlywiki/tight-heavier/base.tid
new file mode 100644
index 000000000..98c6a83bb
--- /dev/null
+++ b/themes/tiddlywiki/tight-heavier/base.tid
@@ -0,0 +1,4 @@
+title: $:/themes/tiddlywiki/tight-heavier/base
+tags: [[$:/tags/Stylesheet]]
+
+\rules only filteredtranscludeinline transcludeinline macrodef macrocallinline
diff --git a/themes/tiddlywiki/tight-heavier/plugin.info b/themes/tiddlywiki/tight-heavier/plugin.info
new file mode 100644
index 000000000..963fb8e8a
--- /dev/null
+++ b/themes/tiddlywiki/tight-heavier/plugin.info
@@ -0,0 +1,9 @@
+{
+	"title": "$:/themes/tiddlywiki/tight-heavier",
+	"name": "Tight and Heavier",
+	"author": "JeremyRuston",
+	"core-version": ">=5.0.0",
+	"plugin-type": "theme",
+	"description": "Tight and Heavier font theme",
+	"dependents": ["$:/themes/tiddlywiki/tight","$:/themes/tiddlywiki/heavier"]
+}