diff --git a/css/selectors.json b/css/selectors.json
index d33a7aa6..d0364af4 100644
--- a/css/selectors.json
+++ b/css/selectors.json
@@ -296,6 +296,15 @@
     "status": "standard",
     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:invalid"
   },
+  ":is": {
+    "syntax": ":is( <complex-selector-list> )",
+    "groups": [
+      "Pseudo-classes",
+      "Selectors"
+    ],
+    "status": "experimental",
+    "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:is"
+  },
   ":lang": {
     "syntax": ":lang( <language-code> )",
     "groups": [
@@ -342,15 +351,6 @@
     "status": "standard",
     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:link"
   },
-  ":matches": {
-    "syntax": ":matches( <selector># )",
-    "groups": [
-      "Pseudo-classes",
-      "Selectors"
-    ],
-    "status": "standard",
-    "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/:matches"
-  },
   ":not": {
     "syntax": ":not( <selector># )",
     "groups": [