diff --git a/ui/widgets/calendar.js b/ui/widgets/calendar.js
index e610e0fe6..e4ed97bb9 100644
--- a/ui/widgets/calendar.js
+++ b/ui/widgets/calendar.js
@@ -12,6 +12,9 @@
 //>>description: Displays a calendar for inline date selection.
 //>>docs: http://api.jqueryui.com/calendar/
 //>>demos: http://jqueryui.com/calendar/
+//>>css.structure: ../../themes/base/core.css
+//>>css.structure: ../../themes/base/calendar.css
+//>>css.theme: ../../themes/base/theme.css
 
 ( function( factory ) {
 	if ( typeof define === "function" && define.amd ) {
diff --git a/ui/widgets/datepicker.js b/ui/widgets/datepicker.js
index 3534b3144..7595cfc3d 100644
--- a/ui/widgets/datepicker.js
+++ b/ui/widgets/datepicker.js
@@ -12,6 +12,10 @@
 //>>description: Displays a calendar for input-based date selection.
 //>>docs: http://api.jqueryui.com/datepicker/
 //>>demos: http://jqueryui.com/datepicker/
+//>>css.structure: ../../themes/base/core.css
+//>>css.structure: ../../themes/base/calendar.css
+//>>css.structure: ../../themes/base/datepicker.css
+//>>css.theme: ../../themes/base/theme.css
 
 ( function( factory ) {
 	if ( typeof define === "function" && define.amd ) {