diff --git a/chapter3_NN/logistic-regression/logistic-regression.ipynb b/chapter3_NN/logistic-regression/logistic-regression.ipynb
index 48cac06..b4fbf65 100644
--- a/chapter3_NN/logistic-regression/logistic-regression.ipynb
+++ b/chapter3_NN/logistic-regression/logistic-regression.ipynb
@@ -383,9 +383,9 @@
    ],
    "source": [
     "# 画出参数更新之前的结果\n",
-    "w0 = w[0].data[0]\n",
-    "w1 = w[1].data[0]\n",
-    "b0 = b.data[0]\n",
+    "w0 = w[0].data[0].numpy()\n",
+    "w1 = w[1].data[0].numpy()\n",
+    "b0 = b.data[0].numpy()\n",
     "\n",
     "plot_x = np.arange(0.2, 1, 0.01)\n",
     "plot_y = (-w0 * plot_x - b0) / w1\n",
@@ -613,9 +613,9 @@
    ],
    "source": [
     "# 画出更新之后的结果\n",
-    "w0 = w[0].data[0]\n",
-    "w1 = w[1].data[0]\n",
-    "b0 = b.data[0]\n",
+    "w0 = w[0].data[0].numpy()\n",
+    "w1 = w[1].data[0].numpy()\n",
+    "b0 = b.data[0].numpy()\n",
     "\n",
     "plot_x = np.arange(0.2, 1, 0.01)\n",
     "plot_y = (-w0 * plot_x - b0) / w1\n",