diff --git a/packages/cli/tests/federation-acceptance.test.mjs b/packages/cli/tests/federation-acceptance.test.mjs
index 7400eaef7..a873c16fd 100644
--- a/packages/cli/tests/federation-acceptance.test.mjs
+++ b/packages/cli/tests/federation-acceptance.test.mjs
@@ -119,7 +119,7 @@ function prepare(name, iss, ca) {
   git('add', 'file.txt'); git('commit', '-q', '-m', 'scratch fixture');
   const adapter = join(fixtureRoot, 'adapter.sh');
   writeFileSync(adapter, `exec '${process.execPath}' '${adapterModule}'\n`);
-  return { name, origin, configDir, dataRoot, adapter, env: { ...env, MOSAIC_CONFIG: config, NODE_EXTRA_CA_CERTS: ca }, port: null };
+  return { name, origin, configDir, dataRoot, adapter, env: { ...env, MOSAIC_CONFIG: config, NODE_EXTRA_CA_CERTS: ca, ZAI_API_KEY: 'fx332-fake-pi' }, port: null };
 }
 
 async function signIn(instance, op, iss, sub) {