diff --git a/tests/functional_tests/workflow_stack_test.py b/tests/functional_tests/workflow_stack_test.py
index 8d2a8f90e..0ab6693b1 100644
--- a/tests/functional_tests/workflow_stack_test.py
+++ b/tests/functional_tests/workflow_stack_test.py
@@ -84,7 +84,11 @@ def workflow():
         b_list = [identity(a=i) for i in range(5, 10)]
         return collect(l_electrons=[a_list, b_list])
 
+    # Temporarily force task packing for this test
+    old_task_packing = ct.get_config("sdk.task_packing")
+    ct.set_config("sdk.task_packing", "true")
     dispatch_id = ct.dispatch(workflow)()
+    ct.set_config("sdk.task_packing", old_task_packing)
 
     assert rm.get_result(dispatch_id, wait=True).result == [
         [0, 1, 2, 3, 4],