diff --git a/http/headers/X-XSS-Protection.json b/http/headers/X-XSS-Protection.json
index 37146ec80af0c4..5288a6864ba221 100644
--- a/http/headers/X-XSS-Protection.json
+++ b/http/headers/X-XSS-Protection.json
@@ -7,7 +7,8 @@
           "support": {
             "chrome": {
               "version_added": "4",
-              "version_removed": "78"
+              "version_removed": "78",
+              "impl_url": "https://crbug.com/40629883"
             },
             "chrome_android": "mirror",
             "edge": {
@@ -15,7 +16,8 @@
               "version_removed": "17"
             },
             "firefox": {
-              "version_added": false
+              "version_added": false,
+              "impl_url": "https://bugzil.la/528661"
             },
             "firefox_android": "mirror",
             "ie": {
@@ -26,7 +28,8 @@
             "opera_android": "mirror",
             "safari": {
               "version_added": "5",
-              "version_removed": "15.4"
+              "version_removed": "15.4",
+              "impl_url": "https://webkit.org/b/230483"
             },
             "safari_ios": "mirror",
             "samsunginternet_android": "mirror",
diff --git a/lint/linter/test-obsolete.ts b/lint/linter/test-obsolete.ts
index 9017713bc72f5c..9ef17b1351250a 100644
--- a/lint/linter/test-obsolete.ts
+++ b/lint/linter/test-obsolete.ts
@@ -152,6 +152,5 @@ export default {
   exceptions: [
     'html.elements.track.kind.descriptions',
     'http.headers.Cache-Control.stale-if-error',
-    'http.headers.X-XSS-Protection',
   ],
 } as Linter;