diff --git a/scripts/install b/scripts/install
index 22ab8e3..cd00bd2 100644
--- a/scripts/install
+++ b/scripts/install
@@ -78,7 +78,7 @@ pushd "$install_dir"
 
     ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" script/configure_bundler
     ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" bin/bundle config set path 'vendor/bundle'
-    ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" bin/bundle install --full-index
+    ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" bin/bundle install --full-index --with postgresql
 popd
 
 ynh_script_progression --message="Preparing the database and create initial admin user..."
diff --git a/scripts/upgrade b/scripts/upgrade
index 0e26968..8d795e9 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -71,7 +71,7 @@ pushd "$install_dir"
 
     ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" bin/bundle config deployment 'true'
     ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" bin/bundle config without 'development test'
-    ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" bin/bundle install --full-index -j$(getconf _NPROCESSORS_ONLN)
+    ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" bin/bundle install --full-index --with postgresql
 
     ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" RAILS_ENV=production bin/rake assets:clean
     ynh_exec_warn_less ynh_exec_as "$app" "$ynh_ruby_load_path" RAILS_ENV=production bin/rake assets:precompile