diff --git a/src/devkit/DevPanel.tsx b/src/devkit/DevPanel.tsx
index ae33ea0..204b57f 100644
--- a/src/devkit/DevPanel.tsx
+++ b/src/devkit/DevPanel.tsx
@@ -161,6 +161,7 @@ export function DevPanel({ simXR, onToggleSimXR }: DevPanelProps) {
               <div>Q/W = grip L/R · A/S = trigger L/R</div>
               <div>1/2 = ativar mão · setas = mover</div>
               <div>Shift+↑/↓ = Z (frente/trás) · R = reset</div>
+              <div>L = fixar/liberar peça (lock)</div>
             </div>
           </div>
         )}