diff --git a/api/Document.json b/api/Document.json
index 50256d902f7d8b..ce7f56f06b7347 100644
--- a/api/Document.json
+++ b/api/Document.json
@@ -737,7 +737,7 @@
               "version_added": "141",
               "partial_implementation": true,
               "notes": [
-                "Fully supported on Windows only.",
+                "Fully supported on Windows and Linux, no support on ChromeOS.",
                 "Method exposed on macOS, but notifications are not reliably spoken."
               ]
             },
diff --git a/api/Element.json b/api/Element.json
index 290bc64fe8f848..adb4fec7c03cbd 100644
--- a/api/Element.json
+++ b/api/Element.json
@@ -1938,7 +1938,7 @@
               "version_added": "141",
               "partial_implementation": true,
               "notes": [
-                "Fully supported on Windows only.",
+                "Fully supported on Windows and Linux, no support on ChromeOS.",
                 "Method exposed on macOS, but notifications are not reliably spoken."
               ]
             },
diff --git a/http/headers/Permissions-Policy.json b/http/headers/Permissions-Policy.json
index b9f9993cf93df3..5ddcc71b45ecf3 100644
--- a/http/headers/Permissions-Policy.json
+++ b/http/headers/Permissions-Policy.json
@@ -110,6 +110,38 @@
             }
           }
         },
+        "aria-notify": {
+          "__compat": {
+            "support": {
+              "chrome": {
+                "version_added": "141",
+                "partial_implementation": true,
+                "notes": "Not supported on ChromeOS."
+              },
+              "chrome_android": "mirror",
+              "edge": "mirror",
+              "firefox": {
+                "version_added": false
+              },
+              "firefox_android": "mirror",
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": false
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": true,
+              "standard_track": false,
+              "deprecated": false
+            }
+          }
+        },
         "attribution-reporting": {
           "__compat": {
             "mdn_url": "https://developer.mozilla.org/docs/Web/HTTP/Reference/Headers/Permissions-Policy/attribution-reporting",