diff --git a/webextensions/api/windows.json b/webextensions/api/windows.json
index 030feec4350ca0..dfaf5170962b6e 100644
--- a/webextensions/api/windows.json
+++ b/webextensions/api/windows.json
@@ -729,7 +729,7 @@
               "__compat": {
                 "support": {
                   "chrome": {
-                    "version_added": true
+                    "version_added": "≤61"
                   },
                   "edge": {
                     "version_added": "14"
@@ -752,7 +752,7 @@
               "__compat": {
                 "support": {
                   "chrome": {
-                    "version_added": true
+                    "version_added": "≤60"
                   },
                   "edge": {
                     "version_added": "14"
@@ -777,7 +777,7 @@
               "__compat": {
                 "support": {
                   "chrome": {
-                    "version_added": true
+                    "version_added": "≤61"
                   },
                   "edge": {
                     "version_added": "14"
@@ -802,7 +802,7 @@
               "__compat": {
                 "support": {
                   "chrome": {
-                    "version_added": true
+                    "version_added": "≤61"
                   },
                   "edge": {
                     "version_added": "14"
@@ -852,11 +852,9 @@
               "__compat": {
                 "support": {
                   "chrome": {
-                    "version_added": true
-                  },
-                  "edge": {
-                    "version_added": "79"
+                    "version_added": "≤61"
                   },
+                  "edge": "mirror",
                   "firefox": {
                     "version_added": "45"
                   },
@@ -896,7 +894,7 @@
               "__compat": {
                 "support": {
                   "chrome": {
-                    "version_added": true
+                    "version_added": "≤60"
                   },
                   "edge": {
                     "version_added": "14"
@@ -921,7 +919,7 @@
               "__compat": {
                 "support": {
                   "chrome": {
-                    "version_added": true
+                    "version_added": "≤60"
                   },
                   "edge": {
                     "version_added": "14"
@@ -946,7 +944,7 @@
               "__compat": {
                 "support": {
                   "chrome": {
-                    "version_added": true
+                    "version_added": "≤61"
                   },
                   "edge": {
                     "version_added": "14"
@@ -972,7 +970,7 @@
               "__compat": {
                 "support": {
                   "chrome": {
-                    "version_added": true
+                    "version_added": "≤60"
                   },
                   "edge": {
                     "version_added": "14"