diff --git a/src/integrationtest/data_classes.py b/src/integrationtest/data_classes.py
index 1b3a73f..8a3bf5c 100755
--- a/src/integrationtest/data_classes.py
+++ b/src/integrationtest/data_classes.py
@@ -70,6 +70,9 @@ class integtest_param_base_class:
     # whether the HDF5 files should be deleted at the end of the test
     remove_hdf5_files: bool = False
 
+    # command-line arguments to be passed to run control
+    dunerc_cmd_args: list[str] = field(default_factory=list)
+
 @dataclass
 class integtest_params_for_generated_dunedaq_config(integtest_param_base_class):
     # *** Parameters that are needed for both generated and predefined configs,
diff --git a/src/integrationtest/integrationtest_drunc.py b/src/integrationtest/integrationtest_drunc.py
index f6fe498..9813ff3 100755
--- a/src/integrationtest/integrationtest_drunc.py
+++ b/src/integrationtest/integrationtest_drunc.py
@@ -600,8 +600,9 @@ class RunResult:
     time_before = time.time()
     # 25-Mar-2026, KAB: use subprocess.Popen to manage the run control session so that we can
     # capture the console output and pass it back to the user for inspection and validation.
-    popen_command_list = [dunerc] + dunerc_option_strings + [process_manager_type] \
-        + [str(create_config_files.dunedaq_config_file)] + [str(create_config_files.integtest_params.config_session_name)] \
+    popen_command_list = [dunerc] + create_config_files.integtest_params.dunerc_cmd_args \
+        + dunerc_option_strings + [process_manager_type] + [str(create_config_files.dunedaq_config_file)] \
+        + [str(create_config_files.integtest_params.config_session_name)] \
         + [str(create_config_files.integtest_params.daq_session_name)] + run_control_commands
     rc_process = subprocess.Popen(
         popen_command_list,