diff --git a/QuadrupedalRobots/ETGRL/README.md b/QuadrupedalRobots/ETGRL/README.md
index 8ce4e9b..1d8aa24 100644
--- a/QuadrupedalRobots/ETGRL/README.md
+++ b/QuadrupedalRobots/ETGRL/README.md
@@ -8,7 +8,7 @@ Reinforcement Learning with Evolutionary Trajectory Generator: A General Approac
 ```txt
 parl >= 1.4.0
 torch >= 1.7.0
-rlschool >= 1.0.2
+rlschool == 1.0.2
 ```
 ## Data Preparation
 
@@ -132,4 +132,4 @@ For exmaple, deploy model in stairstair
 ```python
 cd deployment
 python test.py --ETG_path exp/stairstair/gait_action_list_ETG_stairstair7_12_3.npy --load exp/stairstair/StairStair3_BC1_itr_500383.pt --max_time 3
-```
\ No newline at end of file
+```