diff --git a/refs/biblio.json b/refs/biblio.json
index f2985b112..70d7bae5f 100644
--- a/refs/biblio.json
+++ b/refs/biblio.json
@@ -478,9 +478,6 @@
     "CSS-PAGE-TEMPLATE-1": {
         "aliasOf": "css3-page-template"
     },
-    "CSS-SHAPES": {
-        "aliasOf": "css-shapes-1"
-    },
     "CSS-SPEECH-1": {
         "aliasOf": "css3-speech"
     },
diff --git a/refs/w3c.json b/refs/w3c.json
index efe28f02f..f207f7b1a 100644
--- a/refs/w3c.json
+++ b/refs/w3c.json
@@ -19234,6 +19234,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-align": {
+        "aliasOf": "css-align-3"
+    },
     "css-align-3": {
         "authors": [
             "Elika Etemad",
@@ -19435,6 +19438,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-animation-worklet": {
+        "aliasOf": "css-animation-worklet-1"
+    },
     "css-animation-worklet-1": {
         "authors": [
             "Majid Valipour",
@@ -19470,6 +19476,9 @@
             }
         }
     },
+    "css-animations": {
+        "aliasOf": "css-animations-1"
+    },
     "css-animations-1": {
         "authors": [
             "Dean Jackson",
@@ -19555,6 +19564,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-backgrounds": {
+        "aliasOf": "css-backgrounds-3"
+    },
     "css-backgrounds-3": {
         "authors": [
             "Bert Bos",
@@ -19761,6 +19773,9 @@
         ],
         "isRetired": true
     },
+    "css-box": {
+        "aliasOf": "css-box-3"
+    },
     "css-box-3": {
         "authors": [
             "Elika Etemad"
@@ -19848,6 +19863,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-break": {
+        "aliasOf": "css-break-4"
+    },
     "css-break-3": {
         "authors": [
             "Rossen Atanassov",
@@ -19997,6 +20015,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-cascade": {
+        "aliasOf": "css-cascade-4"
+    },
     "css-cascade-3": {
         "authors": [
             "Elika Etemad",
@@ -20206,6 +20227,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-color": {
+        "aliasOf": "css-color-4"
+    },
     "css-color-3": {
         "authors": [
             "Tantek Çelik",
@@ -20390,6 +20414,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-color-adjust": {
+        "aliasOf": "css-color-adjust-1"
+    },
     "css-color-adjust-1": {
         "authors": [
             "Elika Etemad",
@@ -20443,6 +20470,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-contain": {
+        "aliasOf": "css-contain-2"
+    },
     "css-contain-1": {
         "authors": [
             "Tab Atkins Jr.",
@@ -20600,6 +20630,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-content": {
+        "aliasOf": "css-content-3"
+    },
     "css-content-3": {
         "authors": [
             "Elika Etemad",
@@ -20678,6 +20711,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-counter-styles": {
+        "aliasOf": "css-counter-styles-3"
+    },
     "css-counter-styles-3": {
         "authors": [
             "Tab Atkins Jr."
@@ -20855,6 +20891,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-display": {
+        "aliasOf": "css-display-3"
+    },
     "css-display-3": {
         "authors": [
             "Tab Atkins Jr.",
@@ -21021,6 +21060,9 @@
         "edDraft": "https://drafts.csswg.org/css-display/",
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-easing": {
+        "aliasOf": "css-easing-1"
+    },
     "css-easing-1": {
         "authors": [
             "Brian Birtles",
@@ -21306,6 +21348,9 @@
         "edDraft": "https://drafts.csswg.org/css-flexbox-1/",
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-font-loading": {
+        "aliasOf": "css-font-loading-3"
+    },
     "css-font-loading-3": {
         "authors": [
             "Tab Atkins Jr."
@@ -21352,6 +21397,9 @@
         "edDraft": "https://drafts.csswg.org/css-font-loading/",
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-fonts": {
+        "aliasOf": "css-fonts-4"
+    },
     "css-fonts-3": {
         "authors": [
             "John Daggett",
@@ -21586,6 +21634,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-gcpm": {
+        "aliasOf": "css-gcpm-3"
+    },
     "css-gcpm-3": {
         "authors": [
             "Dave Cramer"
@@ -21662,6 +21713,9 @@
         "edDraft": "https://drafts.csswg.org/css-gcpm/",
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-grid": {
+        "aliasOf": "css-grid-1"
+    },
     "css-grid-1": {
         "authors": [
             "Tab Atkins Jr.",
@@ -21979,6 +22033,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-images": {
+        "aliasOf": "css-images-4"
+    },
     "css-images-3": {
         "authors": [
             "Tab Atkins Jr.",
@@ -22117,6 +22174,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-inline": {
+        "aliasOf": "css-inline-3"
+    },
     "css-inline-3": {
         "authors": [
             "Dave Cramer",
@@ -22220,6 +22280,9 @@
         ],
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-layout-api": {
+        "aliasOf": "css-layout-api-1"
+    },
     "css-layout-api-1": {
         "authors": [
             "Greg Whitworth",
@@ -22261,6 +22324,9 @@
             }
         }
     },
+    "css-line-grid": {
+        "aliasOf": "css-line-grid-1"
+    },
     "css-line-grid-1": {
         "authors": [
             "Elika Etemad",
@@ -22313,6 +22379,9 @@
         "edDraft": "https://drafts.csswg.org/css-line-grid/",
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-lists": {
+        "aliasOf": "css-lists-3"
+    },
     "css-lists-3": {
         "authors": [
             "Elika Etemad",
@@ -22402,6 +22471,9 @@
         "edDraft": "https://drafts.csswg.org/css-lists-3/",
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-logical": {
+        "aliasOf": "css-logical-1"
+    },
     "css-logical-1": {
         "authors": [
             "Rossen Atanassov",
@@ -22659,6 +22731,9 @@
         "source": "https://www.w3.org/2002/01/tr-automation/tr.rdf",
         "isRetired": true
     },
+    "css-multicol": {
+        "aliasOf": "css-multicol-1"
+    },
     "css-multicol-1": {
         "authors": [
             "Håkon Wium Lie",
@@ -22776,6 +22851,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-namespaces": {
+        "aliasOf": "css-namespaces-3"
+    },
     "css-namespaces-3": {
         "authors": [
             "Elika Etemad"
@@ -22855,6 +22933,9 @@
         "hasErrata": "https://www.w3.org/Style/2011/REC-css3-color-20110607-errata.html",
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-nav": {
+        "aliasOf": "css-nav-1"
+    },
     "css-nav-1": {
         "authors": [
             "Jihye Hong",
@@ -22889,6 +22970,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-overflow": {
+        "aliasOf": "css-overflow-4"
+    },
     "css-overflow-3": {
         "authors": [
             "David Baron",
@@ -22988,6 +23072,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-overscroll": {
+        "aliasOf": "css-overscroll-1"
+    },
     "css-overscroll-1": {
         "authors": [
             "Majid Valipour"
@@ -23020,6 +23107,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-page": {
+        "aliasOf": "css-page-3"
+    },
     "css-page-3": {
         "authors": [
             "Elika Etemad",
@@ -23107,6 +23197,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-page-floats": {
+        "aliasOf": "css-page-floats-3"
+    },
     "css-page-floats-3": {
         "authors": [
             "Johannes Wilm"
@@ -23139,6 +23232,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-paint-api": {
+        "aliasOf": "css-paint-api-1"
+    },
     "css-paint-api-1": {
         "authors": [
             "Ian Kilpatrick",
@@ -23206,6 +23302,9 @@
             }
         }
     },
+    "css-position": {
+        "aliasOf": "css-position-3"
+    },
     "css-position-3": {
         "authors": [
             "Rossen Atanassov",
@@ -23327,6 +23426,9 @@
         "source": "https://www.w3.org/2002/01/tr-automation/tr.rdf",
         "isRetired": true
     },
+    "css-properties-values-api": {
+        "aliasOf": "css-properties-values-api-1"
+    },
     "css-properties-values-api-1": {
         "authors": [
             "Tab Atkins Jr.",
@@ -23407,6 +23509,9 @@
             }
         }
     },
+    "css-pseudo": {
+        "aliasOf": "css-pseudo-4"
+    },
     "css-pseudo-4": {
         "authors": [
             "Daniel Glazman",
@@ -23475,6 +23580,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-regions": {
+        "aliasOf": "css-regions-1"
+    },
     "css-regions-1": {
         "authors": [
             "Rossen Atanassov",
@@ -23571,6 +23679,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-rhythm": {
+        "aliasOf": "css-rhythm-1"
+    },
     "css-rhythm-1": {
         "authors": [
             "Koji Ishii",
@@ -23605,6 +23716,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-round-display": {
+        "aliasOf": "css-round-display-1"
+    },
     "css-round-display-1": {
         "authors": [
             "Jihye Hong"
@@ -23667,6 +23781,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-ruby": {
+        "aliasOf": "css-ruby-1"
+    },
     "css-ruby-1": {
         "authors": [
             "Elika Etemad",
@@ -23749,6 +23866,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-scoping": {
+        "aliasOf": "css-scoping-1"
+    },
     "css-scoping-1": {
         "authors": [
             "Tab Atkins Jr.",
@@ -23783,6 +23903,9 @@
         "edDraft": "https://drafts.csswg.org/css-scoping/",
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-scroll-snap": {
+        "aliasOf": "css-scroll-snap-1"
+    },
     "css-scroll-snap-1": {
         "authors": [
             "Matt Rakow",
@@ -23970,6 +24093,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-scrollbars": {
+        "aliasOf": "css-scrollbars-1"
+    },
     "css-scrollbars-1": {
         "authors": [
             "Tantek Çelik",
@@ -24004,6 +24130,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-shadow-parts": {
+        "aliasOf": "css-shadow-parts-1"
+    },
     "css-shadow-parts-1": {
         "authors": [
             "Tab Atkins Jr.",
@@ -24038,6 +24167,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-shapes": {
+        "aliasOf": "css-shapes-1"
+    },
     "css-shapes-1": {
         "authors": [
             "Vincent Hardy",
@@ -24122,6 +24254,9 @@
         "edDraft": "https://drafts.csswg.org/css-shapes/",
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-sizing": {
+        "aliasOf": "css-sizing-3"
+    },
     "css-sizing-3": {
         "authors": [
             "Tab Atkins Jr.",
@@ -24230,6 +24365,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-snappoints": {
+        "aliasOf": "css-snappoints-1"
+    },
     "css-snappoints-1": {
         "aliasOf": "css-scroll-snap-1"
     },
@@ -24321,6 +24459,9 @@
         "edDraft": "https://drafts.csswg.org/css-style-attr/",
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-syntax": {
+        "aliasOf": "css-syntax-3"
+    },
     "css-syntax-3": {
         "authors": [
             "Tab Atkins Jr.",
@@ -24414,6 +24555,9 @@
         "edDraft": "https://drafts.csswg.org/css-syntax/",
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-tables": {
+        "aliasOf": "css-tables-3"
+    },
     "css-tables-3": {
         "authors": [
             "François Remy",
@@ -24479,6 +24623,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-template": {
+        "aliasOf": "css-template-3"
+    },
     "css-template-3": {
         "authors": [
             "Bert Bos",
@@ -24552,6 +24699,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-text": {
+        "aliasOf": "css-text-4"
+    },
     "css-text-3": {
         "authors": [
             "Elika Etemad",
@@ -24802,6 +24952,9 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-text-decor": {
+        "aliasOf": "css-text-decor-4"
+    },
     "css-text-decor-3": {
         "authors": [
             "Elika Etemad",
@@ -24921,9 +25074,15 @@
         },
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-timing": {
+        "aliasOf": "css-timing-1"
+    },
     "css-timing-1": {
         "aliasOf": "css-easing-1"
     },
+    "css-transforms": {
+        "aliasOf": "css-transforms-1"
+    },
     "css-transforms-1": {
         "authors": [
             "Simon Fraser",
@@ -25049,6 +25208,9 @@
         ],
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-transitions": {
+        "aliasOf": "css-transitions-1"
+    },
     "css-transitions-1": {
         "authors": [
             "David Baron",
@@ -25229,6 +25391,9 @@
         "source": "https://www.w3.org/2002/01/tr-automation/tr.rdf",
         "isRetired": true
     },
+    "css-typed-om": {
+        "aliasOf": "css-typed-om-1"
+    },
     "css-typed-om-1": {
         "authors": [
             "Shane Stephens",
@@ -25297,6 +25462,9 @@
             }
         }
     },
+    "css-ui": {
+        "aliasOf": "css-ui-4"
+    },
     "css-ui-3": {
         "authors": [
             "Tantek Çelik",
@@ -25827,6 +25995,9 @@
         "edDraft": "https://drafts.csswg.org/css-variables/",
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-will-change": {
+        "aliasOf": "css-will-change-1"
+    },
     "css-will-change-1": {
         "authors": [
             "Tab Atkins Jr."
@@ -25873,6 +26044,9 @@
         "edDraft": "https://drafts.csswg.org/css-will-change/",
         "repository": "https://github.com/w3c/csswg-drafts"
     },
+    "css-writing-modes": {
+        "aliasOf": "css-writing-modes-4"
+    },
     "css-writing-modes-3": {
         "authors": [
             "Elika Etemad",
diff --git a/refs/wicg.json b/refs/wicg.json
index 0146838e3..821e5313a 100644
--- a/refs/wicg.json
+++ b/refs/wicg.json
@@ -47,14 +47,6 @@
         "source": "https://wicg.github.io/admin/biblio.json",
         "repository": "https://github.com/wicg/cors-rfc1918"
     },
-    "CSS-ANIMATION-WORKLET": {
-        "href": "https://wicg.github.io/animation-worklet/",
-        "title": "CSS Animation Worklet API",
-        "status": "cg-draft",
-        "publisher": "WICG",
-        "source": "https://wicg.github.io/admin/biblio.json",
-        "repository": "https://github.com/wicg/animation-worklet"
-    },
     "CSS-OVERSCROLL-BEHAVIOR": {
         "href": "https://wicg.github.io/overscroll-behavior/",
         "title": "CSS Overscroll Behavior Module Level 1",
@@ -330,7 +322,7 @@
         "aliasOf": "CORS-RFC1918"
     },
     "WICG-CSS-ANIMATION-WORKLET": {
-        "aliasOf": "CSS-ANIMATION-WORKLET"
+        "aliasOf": "css-animation-worklet"
     },
     "WICG-CSS-OVERSCROLL-BEHAVIOR": {
         "aliasOf": "CSS-OVERSCROLL-BEHAVIOR"
diff --git a/scripts/css-alias.js b/scripts/css-alias.js
new file mode 100644
index 000000000..bd385f996
--- /dev/null
+++ b/scripts/css-alias.js
@@ -0,0 +1,58 @@
+/**
+ * Script creates alias for CSS specs
+ * see https://github.com/tobie/specref/issues/563
+ */
+const helper = require("./helper");
+const FILENAME = "w3c.json";
+const obj = helper.readBiblio(FILENAME);
+
+// Some are delta specs, or not stable enough to
+// be used as the canonical ones.
+const overrides = new Map([
+  ["css-grid", "css-grid-1"],
+  // temporary, while we figure out how to deal with aliasOf upgrades
+  ["css-values", "css-values-3"],
+]);
+
+// Store the keys in canonical form as lowercase to make sure
+// we don't override existing ones
+const canonicalKeys = Object.keys(obj).reduce((map, key) => {
+  return map.set(key.toLowerCase(), key);
+}, new Map());
+
+// Find all the CSS WG specs that are not already aliased in "obj"
+// by taking the "greater" level
+const aliasMap = Object.keys(obj)
+  // Find css-what-ever-number
+  .filter(key => key.startsWith("css") && /-\d$/.test(key))
+  .reduce((map, spec) => {
+    let key = spec.slice(0, -2);
+    // if this key already exists, potentially update it
+    // to latest spec
+    if (canonicalKeys.has(key.toLowerCase())) {
+      key = canonicalKeys.get(key.toLowerCase());
+    }
+    if (overrides.has(key)) {
+      map.set(key, overrides.get(key));
+    } else if (!map.has(key) || spec > map.get(key)) {
+      map.set(key, spec);
+    }
+    return map;
+  }, new Map());
+
+// Create the "aliasOf" entries
+Array.from(aliasMap.entries()).reduce((obj, [key, aliasOf]) => {
+  obj[key] = { aliasOf };
+  return obj;
+}, obj);
+
+// Insert the aliasOf entries in the right order
+const sortedObj = Object.keys(obj)
+  .sort()
+  .reduce((sortedObj, key) => {
+    sortedObj[key] = obj[key];
+    return sortedObj;
+  }, {});
+
+// Write the file back out
+helper.writeBiblio(FILENAME, sortedObj);