diff --git a/python/ray/tests/test_autoscaler.py b/python/ray/tests/test_autoscaler.py
index ee17a3455..0e3478cde 100644
--- a/python/ray/tests/test_autoscaler.py
+++ b/python/ray/tests/test_autoscaler.py
@@ -1526,9 +1526,10 @@ MemTotal:       16396056 kB
 MemFree:        12869528 kB
 MemAvailable:   33000000 kB
         """
-        runner.respond_to_call("cat /proc/meminfo", [proc_meminfo])
-        runner.respond_to_call(".Runtimes", ["nvidia-container-runtime"])
-        runner.respond_to_call("nvidia-smi", ["works"])
+        runner.respond_to_call("cat /proc/meminfo", 2 * [proc_meminfo])
+        runner.respond_to_call(".Runtimes", 2 * ["nvidia-container-runtime"])
+        runner.respond_to_call("nvidia-smi", 2 * ["works"])
+        runner.respond_to_call("json .Config.Env", 2 * ["[]"])
         lm = LoadMetrics()
         autoscaler = StandardAutoscaler(
             config_path,
diff --git a/python/ray/tests/test_resource_demand_scheduler.py b/python/ray/tests/test_resource_demand_scheduler.py
index db9fa6b5b..2b7c61042 100644
--- a/python/ray/tests/test_resource_demand_scheduler.py
+++ b/python/ray/tests/test_resource_demand_scheduler.py
@@ -1033,6 +1033,7 @@ class AutoscalingTest(unittest.TestCase):
         config_path = self.write_config(config)
         self.provider = MockProvider()
         runner = MockProcessRunner()
+        runner.respond_to_call("json .Config.Env", ["[]"])
         get_or_create_head_node(
             config,
             printable_config_file=config_path,