diff --git a/bin/omarchy-install-dev-env b/bin/omarchy-install-dev-env
index f2b7619..a1329a9 100755
--- a/bin/omarchy-install-dev-env
+++ b/bin/omarchy-install-dev-env
@@ -47,6 +47,7 @@ install_node() {
 case "$1" in
 ruby)
   echo -e "Installing Ruby on Rails...\n"
+  omarchy-pkg-add libyaml
   mise use --global ruby@latest
   mise settings add idiomatic_version_file_enable_tools ruby
   mise x ruby -- gem install rails --no-document