diff --git a/app/repo.rb b/app/repo.rb
index e35ba30c4a6..8750c10a4ac 100644
--- a/app/repo.rb
+++ b/app/repo.rb
@@ -8,6 +8,7 @@ def initialize(repo_data)
   def api_payload
     {
       app_name:, # beware renaming the key - it's used here: https://github.com/alphagov/seal/blob/36a897b099943713ea14fa2cfe1abff8b25a83a7/lib/team_builder.rb#L97
+      repo_name:,
       team:,
       alerts_team:,
       shortname:,
diff --git a/spec/app/repo_spec.rb b/spec/app/repo_spec.rb
index 00da79f9d06..86362b1f109 100644
--- a/spec/app/repo_spec.rb
+++ b/spec/app/repo_spec.rb
@@ -48,6 +48,7 @@
         "production_hosted_on" => "aws",
       }
       payload = Repo.new(app_details).api_payload
+      expect(payload[:repo_name]).to eq(app_details["repo_name"])
       expect(payload[:app_name]).to eq(app_details["repo_name"])
       expect(payload[:team]).to eq(app_details["team"])
       expect(payload[:alerts_team]).to eq(app_details["alerts_team"])