diff --git a/manifest.scm b/manifest.scm
index 530832d..fb1b85e 100644
--- a/manifest.scm
+++ b/manifest.scm
@@ -9,4 +9,5 @@
   (specification->package "emacs-dockerfile-mode")
   (specification->package "emacs-rainbow-delimiters")
   (specification->package "emacs-ox-rss")
-  (specification->package "rsync")))
+  (specification->package "rsync")
+  (specification->package "ruby-sass")))