diff --git a/README.md b/README.md
index e793fea..ede57e7 100644
--- a/README.md
+++ b/README.md
@@ -119,8 +119,8 @@ For significant changes, please open an issue first to discuss what you would li
 Currently, our todo list is:
 
 - [ ] Load and replay one `LeRobotDataset` in simulation.
-- [ ] Implement controller interface for simulation, like lowcostrobot-leader
 - [ ] Implement inverse kinematics in each environment.
+- [ ] Implement controller interface for simulation, like lowcostrobot-leader
 - [ ] Provide reward shaping functions, get inspired from meta-world .
 - [ ] Implement the real-world interface, seemless interface with real-world observations, motor.
 - [ ] Improve the fidelity of the simulation.