diff --git a/src/react/src/lib/Keyboard.tsx b/src/react/src/lib/Keyboard.tsx
index d466bcc..d7a0bf1 100644
--- a/src/react/src/lib/Keyboard.tsx
+++ b/src/react/src/lib/Keyboard.tsx
@@ -119,7 +119,7 @@ export function Keyboard<
       return;
     }
 
-    lastShiftOrCapsPressAtRef.current = null;
+    lastShiftOrCapsPressAtRef.current = now;
     setIsShiftMode((prev) => !prev);
   };