diff --git a/components/tilelayout/accessibility/wai-aria-support.md b/components/tilelayout/accessibility/wai-aria-support.md
index 5336e82f4..dbc176c87 100644
--- a/components/tilelayout/accessibility/wai-aria-support.md
+++ b/components/tilelayout/accessibility/wai-aria-support.md
@@ -30,8 +30,6 @@ This section lists the selectors, attributes, and behavior patterns supported by
 |  | `aria-labelledby` | Associates the focusable item wrapper with the respective header text element (.k-tilelayout-item-header .k-card-title). |
 |  | `tabindex=0` | Makes the item wrapper element focusable. |
 |  | `aria-keyshortcuts=Enter` | Announces Enter as an available key shortcut when the item is focused. |
-|  | `aria-dropeffect=execute` | Announces that an action, supported by the drop-target (resizing or reordering) will be executed when the item is dropped. |
-|  | `aria-grabbed=true/false` | The "aria-grabbed" state indicates an element's 'grabbed' state in a drag-and-drop operation. |
 | `.k-tilelayout-item-header .k-card-title` | `id` | Unique and deterministic identifier to link the header text element to the focusable wrapper. |
 
 ## Section 508
diff --git a/src-a11y/package-lock.json b/src-a11y/package-lock.json
index cb803adc4..fa2a1d01d 100644
--- a/src-a11y/package-lock.json
+++ b/src-a11y/package-lock.json
@@ -8,7 +8,7 @@
       "version": "1.0.0",
       "license": "ISC",
       "devDependencies": {
-        "@progress/wct-a11y-spec": "^2.19.1",
+        "@progress/wct-a11y-spec": "^2.20.0",
         "gulp": "^4.0.2",
         "gulp-json-editor": "^2.5.6",
         "gulp-rename": "^2.0.0",
@@ -19,9 +19,9 @@
       }
     },
     "node_modules/@progress/wct-a11y-spec": {
-      "version": "2.19.1",
-      "resolved": "https://registry.npmjs.org/@progress/wct-a11y-spec/-/wct-a11y-spec-2.19.1.tgz",
-      "integrity": "sha512-9nadgzZzd6hICjSPm5eREmY2qa+wGCCon3yxtAd4wLAyQ43kc6SmrtIlHQCXXIOzeynxz6pfVbB8ucSoa7mcVQ==",
+      "version": "2.20.0",
+      "resolved": "https://registry.npmjs.org/@progress/wct-a11y-spec/-/wct-a11y-spec-2.20.0.tgz",
+      "integrity": "sha512-iE5q/VHnlDZmKf3o5Jg+5x5qoHcfBkc52BPUhvz+LkGcZKHEnB3+grsxyWMibxmu9wxp9clSheU0BpPp9yRQKw==",
       "dev": true,
       "license": "SEE LICENSE IN LICENSE.md",
       "engines": {
diff --git a/src-a11y/package.json b/src-a11y/package.json
index 238f7942e..d7ac5e1b2 100644
--- a/src-a11y/package.json
+++ b/src-a11y/package.json
@@ -8,7 +8,7 @@
   "author": "",
   "license": "ISC",
   "devDependencies": {
-    "@progress/wct-a11y-spec": "^2.19.1",
+    "@progress/wct-a11y-spec": "^2.20.0",
     "gulp": "^4.0.2",
     "gulp-json-editor": "^2.5.6",
     "gulp-rename": "^2.0.0",