diff --git a/api/BeforeUnloadEvent.json b/api/BeforeUnloadEvent.json
index 97cc07e5186c67..3137a032e2374a 100644
--- a/api/BeforeUnloadEvent.json
+++ b/api/BeforeUnloadEvent.json
@@ -9,6 +9,9 @@
             "version_added": "30"
           },
           "chrome_android": "mirror",
+          "deno": {
+            "version_added": "1.24"
+          },
           "edge": {
             "version_added": "12"
           },
@@ -47,6 +50,9 @@
               "version_added": "30"
             },
             "chrome_android": "mirror",
+            "deno": {
+              "version_added": false
+            },
             "edge": {
               "version_added": "12"
             },
@@ -86,6 +92,9 @@
               "version_added": "60"
             },
             "chrome_android": "mirror",
+            "deno": {
+              "version_added": false
+            }
             "edge": {
               "version_added": "18"
             },
diff --git a/api/Window.json b/api/Window.json
index 2f437636cac36d..3370a0145fac89 100644
--- a/api/Window.json
+++ b/api/Window.json
@@ -320,6 +320,9 @@
               "version_added": "1"
             },
             "chrome_android": "mirror",
+            "deno": {
+              "version_added": "1.24"
+            },
             "edge": {
               "version_added": "12"
             },
@@ -360,6 +363,9 @@
                 "version_added": "30"
               },
               "chrome_android": "mirror",
+              "deno": {
+                "version_added": false
+              },
               "edge": {
                 "version_added": "12"
               },
@@ -397,6 +403,9 @@
                 "version_added": false
               },
               "chrome_android": "mirror",
+              "deno": {
+                "version_added": false
+              },
               "edge": {
                 "version_added": "12",
                 "version_removed": "79"
@@ -435,6 +444,9 @@
                 "version_added": "1"
               },
               "chrome_android": "mirror",
+              "deno": {
+                "version_added": false
+              },
               "edge": {
                 "version_added": "12"
               },