diff --git a/packages/block-editor/src/components/url-popover/index.js b/packages/block-editor/src/components/url-popover/index.js
index 9311d928a8266..db71d8127e7a4 100644
--- a/packages/block-editor/src/components/url-popover/index.js
+++ b/packages/block-editor/src/components/url-popover/index.js
@@ -72,6 +72,7 @@ const URLPopover = forwardRef(
 			<Popover
 				ref={ ref }
 				role="dialog"
+				aria-modal="true"
 				aria-label={ __( 'Edit URL' ) }
 				className="block-editor-url-popover"
 				focusOnMount={ focusOnMount }