diff --git "a/notebooks/\347\254\25412\347\253\240_PPO_Pendulum-v1.ipynb" "b/notebooks/\347\254\25412\347\253\240_PPO_Pendulum-v1.ipynb"
index 2da300f..aa3ce53 100644
--- "a/notebooks/\347\254\25412\347\253\240_PPO_Pendulum-v1.ipynb"
+++ "b/notebooks/\347\254\25412\347\253\240_PPO_Pendulum-v1.ipynb"
@@ -9,7 +9,6 @@
     "import sys,os\n",
     "sys.path.append(os.getcwd())\n",
     "\n",
-    "import random\n",
     "import gymnasium as gym\n",
     "import numpy as np\n",
     "\n",