diff --git a/ml-agents/mlagents/trainers/trainer_controller.py b/ml-agents/mlagents/trainers/trainer_controller.py
index 870ce7a813..550a514a1d 100644
--- a/ml-agents/mlagents/trainers/trainer_controller.py
+++ b/ml-agents/mlagents/trainers/trainer_controller.py
@@ -30,6 +30,11 @@
 from mlagents.trainers.agent_processor import AgentManager
 from mlagents.tf_utils.globals import get_rank
 
+try:
+    import torch
+except ModuleNotFoundError:
+    torch = None  # type: ignore
+
 
 class TrainerController:
     def __init__(
@@ -66,6 +71,8 @@ def __init__(
         self.kill_trainers = False
         np.random.seed(training_seed)
         tf.set_random_seed(training_seed)
+        if torch is not None:
+            torch.manual_seed(training_seed)
         self.rank = get_rank()
 
     @timed