diff --git a/webextensions/api/windows.json b/webextensions/api/windows.json
index 746ac4851b0f40..0bfcca132b7cd5 100644
--- a/webextensions/api/windows.json
+++ b/webextensions/api/windows.json
@@ -110,7 +110,7 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
+                  "version_added": "≤60"
                 },
                 "edge": {
                   "version_added": "14"
@@ -135,7 +135,7 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
+                  "version_added": "≤60"
                 },
                 "edge": {
                   "version_added": "14"
@@ -160,7 +160,7 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
+                  "version_added": "≤60"
                 },
                 "edge": {
                   "version_added": "14"
@@ -211,7 +211,7 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
+                  "version_added": "≤60"
                 },
                 "edge": {
                   "version_added": "14"
@@ -255,7 +255,7 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
+                  "version_added": "≤60"
                 },
                 "edge": {
                   "version_added": "14"
@@ -280,7 +280,7 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
+                  "version_added": "≤60"
                 },
                 "edge": {
                   "version_added": "14"
@@ -326,7 +326,7 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
+                  "version_added": "≤60"
                 },
                 "edge": {
                   "version_added": "14"
@@ -351,7 +351,7 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
+                  "version_added": "≤60"
                 },
                 "edge": {
                   "version_added": "14"
@@ -376,7 +376,7 @@
             "__compat": {
               "support": {
                 "chrome": {
-                  "version_added": true
+                  "version_added": "≤60"
                 },
                 "edge": {
                   "version_added": "14"