diff --git a/ultralytics/utils/callbacks/raytune.py b/ultralytics/utils/callbacks/raytune.py
index 1a368db6..d92dc322 100644
--- a/ultralytics/utils/callbacks/raytune.py
+++ b/ultralytics/utils/callbacks/raytune.py
@@ -16,8 +16,7 @@ def on_fit_epoch_end(trainer):
     """Sends training metrics to Ray Tune at end of each epoch."""
     if ray.train._internal.session._get_session():  # replacement for deprecated ray.tune.is_session_enabled()
         metrics = trainer.metrics
-        metrics["epoch"] = trainer.epoch
-        session.report(metrics)
+        session.report({**metrics, **{"epoch": trainer.epoch + 1}})
 
 
 callbacks = (