diff --git a/api/Element.json b/api/Element.json
index 370a1517d1d481..789afbb22a353f 100644
--- a/api/Element.json
+++ b/api/Element.json
@@ -2624,6 +2624,41 @@
             "deprecated": false
           }
         },
+        "init_clonable_parameter": {
+          "__compat": {
+            "description": "<code>init.clonable</code> parameter",
+            "spec_url": "https://dom.spec.whatwg.org/#dom-shadowrootinit-clonable",
+            "support": {
+              "chrome": {
+                "version_added": false
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "preview"
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "alternative_name": "cloneable",
+                "version_added": "16.4"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
         "init_delegatesFocus_parameter": {
           "__compat": {
             "description": "<code>init.delegatesFocus</code> parameter",
diff --git a/api/ShadowRoot.json b/api/ShadowRoot.json
index 40111d5eded03a..ba69ec3a16c858 100644
--- a/api/ShadowRoot.json
+++ b/api/ShadowRoot.json
@@ -106,6 +106,44 @@
           }
         }
       },
+      "clonable": {
+        "__compat": {
+          "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/clonable",
+          "spec_url": "https://dom.spec.whatwg.org/#dom-shadowroot-clonable",
+          "tags": [
+            "web-features:shadow-dom"
+          ],
+          "support": {
+            "chrome": {
+              "version_added": false
+            },
+            "chrome_android": "mirror",
+            "edge": "mirror",
+            "firefox": {
+              "version_added": "preview"
+            },
+            "firefox_android": "mirror",
+            "ie": {
+              "version_added": false
+            },
+            "oculus": "mirror",
+            "opera": "mirror",
+            "opera_android": "mirror",
+            "safari": {
+              "alternative_name": "cloneable",
+              "version_added": "preview"
+            },
+            "safari_ios": "mirror",
+            "samsunginternet_android": "mirror",
+            "webview_android": "mirror"
+          },
+          "status": {
+            "experimental": false,
+            "standard_track": true,
+            "deprecated": false
+          }
+        }
+      },
       "delegatesFocus": {
         "__compat": {
           "mdn_url": "https://developer.mozilla.org/docs/Web/API/ShadowRoot/delegatesFocus",