diff --git a/tutorial-contents-notebooks/301_regression.ipynb b/tutorial-contents-notebooks/301_regression.ipynb
index 6485fd0..2f7590a 100644
--- a/tutorial-contents-notebooks/301_regression.ipynb
+++ b/tutorial-contents-notebooks/301_regression.ipynb
@@ -125,7 +125,7 @@
    },
    "outputs": [],
    "source": [
-    "optimizer = torch.optim.SGD(net.parameters(), lr=0.4)\n",
+    "optimizer = torch.optim.SGD(net.parameters(), lr=0.2)\n",
     "loss_func = torch.nn.MSELoss()  # this is for regression mean squared loss"
    ]
   },