diff --git a/api/SVGNumberList.json b/api/SVGNumberList.json
index 51d123af8d8c18..63908a677c03a7 100644
--- a/api/SVGNumberList.json
+++ b/api/SVGNumberList.json
@@ -47,6 +47,7 @@
       },
       "appendItem": {
         "__compat": {
+          "spec_url": "https://svgwg.org/svg2-draft/types.html#__svg__SVGNameList__appendItem",
           "tags": [
             "web-features:svg"
           ],
@@ -89,6 +90,7 @@
       },
       "clear": {
         "__compat": {
+          "spec_url": "https://svgwg.org/svg2-draft/types.html#__svg__SVGNameList__clear",
           "tags": [
             "web-features:svg"
           ],
@@ -131,6 +133,7 @@
       },
       "getItem": {
         "__compat": {
+          "spec_url": "https://svgwg.org/svg2-draft/types.html#__svg__SVGNameList__getItem",
           "tags": [
             "web-features:svg"
           ],
@@ -173,6 +176,7 @@
       },
       "initialize": {
         "__compat": {
+          "spec_url": "https://svgwg.org/svg2-draft/types.html#__svg__SVGNameList__initialize",
           "tags": [
             "web-features:svg"
           ],
@@ -215,6 +219,7 @@
       },
       "insertItemBefore": {
         "__compat": {
+          "spec_url": "https://svgwg.org/svg2-draft/types.html#__svg__SVGNameList__insertItemBefore",
           "tags": [
             "web-features:svg"
           ],
@@ -257,6 +262,7 @@
       },
       "length": {
         "__compat": {
+          "spec_url": "https://svgwg.org/svg2-draft/types.html#__svg__SVGNameList__length",
           "tags": [
             "web-features:svg"
           ],
@@ -297,6 +303,7 @@
       },
       "numberOfItems": {
         "__compat": {
+          "spec_url": "https://svgwg.org/svg2-draft/types.html#__svg__SVGNameList__numberOfItems",
           "tags": [
             "web-features:svg"
           ],
@@ -339,6 +346,7 @@
       },
       "removeItem": {
         "__compat": {
+          "spec_url": "https://svgwg.org/svg2-draft/types.html#__svg__SVGNameList__removeItem",
           "tags": [
             "web-features:svg"
           ],
@@ -381,6 +389,7 @@
       },
       "replaceItem": {
         "__compat": {
+          "spec_url": "https://svgwg.org/svg2-draft/types.html#__svg__SVGNameList__replaceItem",
           "tags": [
             "web-features:svg"
           ],