diff --git a/features-json/hardwareconcurrency.json b/features-json/hardwareconcurrency.json
index 55b47408de..870959bb19 100644
--- a/features-json/hardwareconcurrency.json
+++ b/features-json/hardwareconcurrency.json
@@ -15,6 +15,10 @@
     {
       "url":"https://bugs.webkit.org/show_bug.cgi?id=132588",
       "title":"WebKit implementation bug"
+    },
+    {
+      "url": "https://bugs.webkit.org/show_bug.cgi?id=233381",
+      "title": "WebKit reinstatement bug"
     }
   ],
   "bugs":[
@@ -374,37 +378,37 @@
       "9.1":"n d #1",
       "10":"n d #1",
       "10.1":"y #1",
-      "11":"y #1",
-      "11.1":"y #1",
-      "12":"y #1",
-      "12.1":"y #1",
-      "13":"y #1",
-      "13.1":"y #1",
-      "14":"y #1",
-      "14.1":"y #1",
-      "15":"y #1",
-      "15.1":"y #1",
-      "15.2-15.3":"y #1",
-      "15.4":"y #1",
-      "15.5":"y #1",
-      "15.6":"y #1",
-      "16.0":"y #1",
-      "16.1":"y #1",
-      "16.2":"y #1",
-      "16.3":"y #1",
-      "16.4":"y #1",
-      "16.5":"y #1",
-      "16.6":"y #1",
-      "17.0":"y #1",
-      "17.1":"y #1",
-      "17.2":"y #1",
-      "17.3":"y #1",
-      "17.4":"y #1",
-      "17.5":"y #1",
-      "17.6":"y #1",
-      "18.0":"y #1",
-      "18.1":"y #1",
-      "TP":"y #1"
+      "11":"n",
+      "11.1":"n",
+      "12":"n",
+      "12.1":"n",
+      "13":"n",
+      "13.1":"n",
+      "14":"n",
+      "14.1":"n",
+      "15":"n",
+      "15.1":"n",
+      "15.2-15.3":"n",
+      "15.4":"y #2",
+      "15.5":"y #2",
+      "15.6":"y #2",
+      "16.0":"y #2",
+      "16.1":"y #2",
+      "16.2":"y #2",
+      "16.3":"y #2",
+      "16.4":"y #2",
+      "16.5":"y #2",
+      "16.6":"y #2",
+      "17.0":"y #2",
+      "17.1":"y #2",
+      "17.2":"y #2",
+      "17.3":"y #2",
+      "17.4":"y #2",
+      "17.5":"y #2",
+      "17.6":"y #2",
+      "18.0":"y #2",
+      "18.1":"y #2",
+      "TP":"y #2"
     },
     "opera":{
       "9":"n",
@@ -530,37 +534,37 @@
       "9.3":"n d #1",
       "10.0-10.2":"n d #1",
       "10.3":"y #1",
-      "11.0-11.2":"y #1",
-      "11.3-11.4":"y #1",
-      "12.0-12.1":"y #1",
-      "12.2-12.5":"y #1",
-      "13.0-13.1":"y #1",
-      "13.2":"y #1",
-      "13.3":"y #1",
-      "13.4-13.7":"y #1",
-      "14.0-14.4":"y #1",
-      "14.5-14.8":"y #1",
-      "15.0-15.1":"y #1",
-      "15.2-15.3":"y #1",
-      "15.4":"y #1",
-      "15.5":"y #1",
-      "15.6-15.8":"y #1",
-      "16.0":"y #1",
-      "16.1":"y #1",
-      "16.2":"y #1",
-      "16.3":"y #1",
-      "16.4":"y #1",
-      "16.5":"y #1",
-      "16.6-16.7":"y #1",
-      "17.0":"y #1",
-      "17.1":"y #1",
-      "17.2":"y #1",
-      "17.3":"y #1",
-      "17.4":"y #1",
-      "17.5":"y #1",
-      "17.6":"y #1",
-      "18.0":"y #1",
-      "18.1":"y #1"
+      "11.0-11.2":"n",
+      "11.3-11.4":"n",
+      "12.0-12.1":"n",
+      "12.2-12.5":"n",
+      "13.0-13.1":"n",
+      "13.2":"n",
+      "13.3":"n",
+      "13.4-13.7":"n",
+      "14.0-14.4":"n",
+      "14.5-14.8":"n",
+      "15.0-15.1":"n",
+      "15.2-15.3":"n",
+      "15.4":"y #2",
+      "15.5":"y #2",
+      "15.6-15.8":"y #2",
+      "16.0":"y #2",
+      "16.1":"y #2",
+      "16.2":"y #2",
+      "16.3":"y #2",
+      "16.4":"y #2",
+      "16.5":"y #2",
+      "16.6-16.7":"y #2",
+      "17.0":"y #2",
+      "17.1":"y #2",
+      "17.2":"y #2",
+      "17.3":"y #2",
+      "17.4":"y #2",
+      "17.5":"y #2",
+      "17.6":"y #2",
+      "18.0":"y #2",
+      "18.1":"y #2"
     },
     "op_mini":{
       "all":"n"
@@ -640,7 +644,8 @@
   },
   "notes":"",
   "notes_by_num":{
-    "1":"WebKit browsers clamp the maximum value returned to 2 on iOS devices and 8 on all others. Disabled in Safari behind the ENABLE_NAVIGATOR_HWCONCURRENCY build option."
+    "1":"WebKit browsers clamp the maximum value returned to 2 on iOS devices and 8 on all others. Disabled in Safari behind the ENABLE_NAVIGATOR_HWCONCURRENCY build option.",
+    "2":"Safari clamps this property to 4 or 8 cores, to prevent device fingerprinting."
   },
   "usage_perc_y":96.37,
   "usage_perc_a":0,