diff --git a/release/benchmarks/distributed/test_many_tasks.py b/release/benchmarks/distributed/test_many_tasks.py
index 6f524cf4e3ea..941795d19b27 100644
--- a/release/benchmarks/distributed/test_many_tasks.py
+++ b/release/benchmarks/distributed/test_many_tasks.py
@@ -18,7 +18,7 @@
 def test_max_running_tasks(num_tasks):
     cpus_per_task = 0.25
 
-    @ray.remote(num_cpus=cpus_per_task)
+    @ray.remote(num_cpus=cpus_per_task, runtime_env={"env_vars": {"FOO": "bar"}})
     def task():
         time.sleep(sleep_time)