diff --git a/torchtitan/experiments/rl/grpo.py b/torchtitan/experiments/rl/grpo.py
index 68e7bf2e44..33404cbb34 100644
--- a/torchtitan/experiments/rl/grpo.py
+++ b/torchtitan/experiments/rl/grpo.py
@@ -124,6 +124,8 @@ def allocate(self, num_gpus: int) -> Callable[[], None]:
 
         def _bootstrap():
             os.environ["CUDA_VISIBLE_DEVICES"] = ",".join(str(g) for g in gpu_ids)
+            # TODO: Remove once Monarch/PyTorch fixes concurrent import during unpickling.
+            import torch  # noqa: F401
 
         return _bootstrap