diff --git a/projects/implicitron_trainer/experiment.py b/projects/implicitron_trainer/experiment.py
index c042e965..a033251a 100755
--- a/projects/implicitron_trainer/experiment.py
+++ b/projects/implicitron_trainer/experiment.py
@@ -83,6 +83,9 @@ from .impl.utils import seed_all_random_engines
 
 logger = logging.getLogger(__name__)
 
+# workaround for https://github.com/facebookresearch/hydra/issues/2262
+_RUN = hydra.types.RunMode.RUN
+
 if version.parse(hydra.__version__) < version.Version("1.1"):
     raise ValueError(
         f"Hydra version {hydra.__version__} is too old."
@@ -136,6 +139,7 @@ class Experiment(Configurable):  # pyre-ignore: 13
         default_factory=lambda: {
             "run": {"dir": "."},  # Make hydra not change the working dir.
             "output_subdir": None,  # disable storing the .hydra logs
+            "mode": _RUN,
         }
     )
 
diff --git a/projects/implicitron_trainer/tests/experiment.yaml b/projects/implicitron_trainer/tests/experiment.yaml
index 976027ca..9588043b 100644
--- a/projects/implicitron_trainer/tests/experiment.yaml
+++ b/projects/implicitron_trainer/tests/experiment.yaml
@@ -9,6 +9,7 @@ hydra:
   run:
     dir: .
   output_subdir: null
+  mode: RUN
 data_source_ImplicitronDataSource_args:
   dataset_map_provider_class_type: ???
   data_loader_map_provider_class_type: SequenceDataLoaderMapProvider