diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index ce199d8..9945b21 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -31,7 +31,7 @@ jobs:
       PGUSER: ubuntu
       PGPASSWORD: password
       PGHOST: localhost
-
+      BUNDLE_RUBYGEMS__PKG__GITHUB__COM: gocardless-robot-readonly:${{ secrets.GITHUB_TOKEN }}
     steps:
       - uses: actions/checkout@v3
       - name: Set up Ruby
diff --git a/Gemfile b/Gemfile
index 7d1049b..1181f91 100644
--- a/Gemfile
+++ b/Gemfile
@@ -22,6 +22,7 @@ group :test do
 end
 
 gem 'prometheus-client', '~> 1.0'
-# gem 'prometheus_gcstat', git: 'git@github.com:gocardless/prometheus_gcstat_ruby'
-
+source "https://rubygems.pkg.github.com/gocardless" do
+  gem "prometheus_gcstat", "0.1.1"
+end
 gemspec