diff --git a/collections/design-essentials/index.md b/collections/design-essentials/index.md
index ea9ecebf304..b9a6d5ec95b 100644
--- a/collections/design-essentials/index.md
+++ b/collections/design-essentials/index.md
@@ -1,6 +1,7 @@
 ---
 items:
  - twbs/bootstrap
+ - argyleink/open-props
  - animate-css/animate.css
  - nathansmith/960-Grid-System
  - necolas/normalize.css