diff --git a/core/src/components/button-group/button-group.tsx b/core/src/components/button-group/button-group.tsx
index e9ba122c46..7dce680a95 100644
--- a/core/src/components/button-group/button-group.tsx
+++ b/core/src/components/button-group/button-group.tsx
@@ -102,6 +102,7 @@ export class ButtonGroup implements ComponentInterface {
           button.size = size;
           button.onclick = () => this.handleButtonClick(index, button.getAttribute('value'));
           button.classList.toggle('active', index === this.activeIndex);
+          button.setAttribute('aria-pressed', index === this.activeIndex ? 'true' : 'false');
         })}
       </Host>
     );