--- a/buildfarm/release/release-runner.py
+++ b/buildfarm/release/release-runner.py
@@ -494,16 +494,17 @@ def main(options):
                 "mozharness_changeset": release.get('mh_changeset', release['mozillaRevision']),
                 "partial_updates": getPartials(release),
                 "branch": branch,
                 "updates_enabled": bool(release["partials"]),
                 "l10n_config": get_l10n_config(release, branchConfig, branch, l10n_changesets, index),
                 "en_US_config": get_en_US_config(release, branchConfig, branch, index),
                 "verifyConfigs": {},
                 "balrog_api_root": branchConfig["balrog_api_root"],
+                "funsize_balrog_api_root": branchConfig["funsize_balrog_api_root"],
                 "balrog_username": balrog_username,
                 "balrog_password": balrog_password,
                 "beetmover_aws_access_key_id": beetmover_aws_access_key_id,
                 "beetmover_aws_secret_access_key": beetmover_aws_secret_access_key,
                 # TODO: stagin specific, make them configurable
                 "signing_class": "release-signing",
                 "bouncer_enabled": branchConfig["bouncer_enabled"],
                 "release_channels": branchConfig["release_channels"],