diff --git a/habitat/plan.sh b/habitat/plan.sh
index 8beddd65..28960c7b 100644
--- a/habitat/plan.sh
+++ b/habitat/plan.sh
@@ -2,6 +2,7 @@ pkg_name=site
 pkg_origin=codeforphilly
 pkg_maintainer="Code for Philly <hello@codeforphilly.org>"
 pkg_scaffolding=emergence/scaffolding-site
+pkg_deps=(jarvus/mjml)
 
 pkg_version() {
   scaffolding_detect_pkg_version