diff --git a/lib/solidus_dev_support/templates/extension/bin/sandbox.tt b/lib/solidus_dev_support/templates/extension/bin/sandbox.tt
index 10530b3c..7522a75f 100755
--- a/lib/solidus_dev_support/templates/extension/bin/sandbox.tt
+++ b/lib/solidus_dev_support/templates/extension/bin/sandbox.tt
@@ -47,6 +47,7 @@ cat <<RUBY >> Gemfile
 gem 'solidus', github: 'solidusio/solidus', branch: '$SOLIDUS_BRANCH'
 gem 'rails-i18n'
 gem 'solidus_i18n'
+gem 'solidus_auth_devise'
 
 gem '$extension_name', path: '..'