diff --git a/packages/blockly/core/utils/aria.ts b/packages/blockly/core/utils/aria.ts
index e0c4735020e..b4e962cf021 100644
--- a/packages/blockly/core/utils/aria.ts
+++ b/packages/blockly/core/utils/aria.ts
@@ -193,6 +193,12 @@ export enum State {
    * Value: one of {polite, assertive, off}.
    */
   LIVE = 'live',
+  /**
+   * See https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Reference/Attributes/aria-pressed.
+   *
+   * Value: one of {true, false, mixed, undefined}.
+   */
+  PRESSED = 'pressed',
   /**
    * See https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Reference/Attributes/aria-roledescription.
    *