diff --git a/helpers/helpers.v2.1.d/ruby b/helpers/helpers.v2.1.d/ruby
index f2092f070..8e19548c7 100644
--- a/helpers/helpers.v2.1.d/ruby
+++ b/helpers/helpers.v2.1.d/ruby
@@ -7,11 +7,6 @@ ruby_version_path="$rbenv_install_dir/versions"
 export RBENV_ROOT="$rbenv_install_dir"
 export rbenv_root="$rbenv_install_dir"
 
-if dpkg --compare-versions ${YNH_APP_PACKAGING_FORMAT:-0} lt 2; then
-	build_ruby_dependencies="libjemalloc-dev curl build-essential libreadline-dev zlib1g-dev libsqlite3-dev libssl-dev libxml2-dev libxslt-dev autoconf automake bison libtool"
-	build_pkg_dependencies="${build_pkg_dependencies:-} $build_ruby_dependencies"
-fi
-
 # Load the version of Ruby for an app, and set variables.
 #
 # ynh_use_ruby has to be used in any app scripts before using Ruby for the first time.