diff --git a/vllm/v1/worker/tpu_worker.py b/vllm/v1/worker/tpu_worker.py
index d09f5dd84007..e190797dfb7f 100644
--- a/vllm/v1/worker/tpu_worker.py
+++ b/vllm/v1/worker/tpu_worker.py
@@ -75,6 +75,9 @@ def __init__(
                         self.profile_dir)
             self.profiler = xp.start_server(9012)
 
+        if self.model_config.seed is None:
+            self.model_config.seed = 0
+
     def init_device(self):
         os.environ["PJRT_DEVICE"] = "TPU"
         torch.set_grad_enabled(False)