diff --git a/sim/resources/zeroth/joints.py b/sim/resources/zeroth/joints.py
index 2f17de9..890784f 100644
--- a/sim/resources/zeroth/joints.py
+++ b/sim/resources/zeroth/joints.py
@@ -105,7 +105,7 @@ def default_limits(cls) -> Dict[str, Dict[str, float]]:
             Robot.legs.right.knee_pitch: {
                 "lower": 0,
                 "upper": 1.57,
-            }
+            },
         }
 
     # p_gains
@@ -167,4 +167,4 @@ def print_joints() -> None:
 
 if __name__ == "__main__":
     # python -m sim.Robot.joints
-    print_joints()
\ No newline at end of file
+    print_joints()