diff --git a/css/functions.json b/css/functions.json
index 8fee9090..f9b9dc12 100644
--- a/css/functions.json
+++ b/css/functions.json
@@ -326,11 +326,11 @@
     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/gradient/radial-gradient"
   },
   "ray()": {
-    "syntax": "ray( <angle> && <ray-size>? && contain? )",
+    "syntax": "ray( <angle> && <ray-size>? && contain? && [at <position>]? )",
     "groups": [
       "CSS Motion Path"
     ],
-    "status": "experimental",
+    "status": "standard",
     "mdn_url": "https://developer.mozilla.org/docs/Web/CSS/ray"
   },
   "repeating-linear-gradient()": {
diff --git a/css/syntaxes.json b/css/syntaxes.json
index aa1191d2..23f19d9a 100644
--- a/css/syntaxes.json
+++ b/css/syntaxes.json
@@ -621,7 +621,7 @@
     "syntax": "<number [0,∞]> [ / <number [0,∞]> ]?"
   },
   "ray()": {
-    "syntax": "ray( <angle> && <ray-size>? && contain? )"
+    "syntax": "{ <angle> && [closest-side | closest-corner | farthest-side | farthest-corner | sides] && contain? && [at [ left | center | right | top | bottom | <length-percentage> ] | [ left | center | right ] && [ top | center | bottom ] | [ left | center | right | <length-percentage> ] [ top | center | bottom | <length-percentage> ] | [ [ left | right ] <length-percentage> ] && [ [ top | bottom ] <length-percentage> ]]"
   },
   "relative-selector": {
     "syntax": "<combinator>? <complex-selector>"