diff --git a/package-lock.json b/package-lock.json
index c3f301a68..cbe3b987a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -21,7 +21,7 @@
         "@webref/css": "^8.0.0",
         "@webref/elements": "^2.5.0",
         "@webref/events": "^1.18.6",
-        "@webref/idl": "^3.83.0",
+        "@webref/idl": "^3.66.2",
         "bcd-idl-mapper": "^3.0.2",
         "cpx2": "^9.0.0",
         "danger": "^13.0.4",
@@ -316,12 +316,11 @@
       }
     },
     "node_modules/@mdn/browser-compat-data": {
-      "version": "8.0.1",
-      "resolved": "https://registry.npmjs.org/@mdn/browser-compat-data/-/browser-compat-data-8.0.1.tgz",
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+      "version": "8.0.13",
+      "resolved": "https://registry.npmjs.org/@mdn/browser-compat-data/-/browser-compat-data-8.0.13.tgz",
+      "integrity": "sha512-jR1x+1UHDwYUBr2JLOuLucZGyAF7XphpxFbWQoUSwKgHt2zlMidfRSJ/0C3yC7vRBxMOjJF2edptu8kz0BGWrw==",
       "dev": true,
-      "license": "CC0-1.0",
-      "peer": true
+      "license": "CC0-1.0"
     },
     "node_modules/@octokit/auth-token": {
       "version": "6.0.0",
@@ -338,7 +337,6 @@
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       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@octokit/auth-token": "^6.0.0",
         "@octokit/graphql": "^9.0.3",
@@ -746,7 +744,6 @@
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       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@typescript-eslint/scope-manager": "8.68.0",
         "@typescript-eslint/types": "8.68.0",
@@ -1116,7 +1113,6 @@
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       "dev": true,
       "license": "MIT",
-      "peer": true,
       "peerDependencies": {
         "webidl2": "^24.5.0"
       }
@@ -1127,7 +1123,6 @@
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       "dev": true,
       "license": "MIT",
-      "peer": true,
       "bin": {
         "acorn": "bin/acorn"
       },
@@ -1505,7 +1500,6 @@
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       "dev": true,
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "@octokit/auth-token": "^4.0.0",
         "@octokit/graphql": "^7.1.0",
@@ -1779,7 +1773,6 @@
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       "dev": true,
       "license": "MIT",
-      "peer": true,
       "workspaces": [
         "packages/*"
       ],
@@ -1839,7 +1832,6 @@
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       "dev": true,
       "license": "MIT",
-      "peer": true,
       "bin": {
         "eslint-config-prettier": "bin/cli.js"
       },
@@ -2591,7 +2583,8 @@
       "resolved": "https://registry.npmjs.org/mdn-data/-/mdn-data-2.27.1.tgz",
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       "dev": true,
-      "license": "CC0-1.0"
+      "license": "CC0-1.0",
+      "peer": true
     },
     "node_modules/memfs-or-file-map-to-github-branch": {
       "version": "1.3.0",
@@ -2872,7 +2865,6 @@
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       "dev": true,
       "license": "MIT",
-      "peer": true,
       "bin": {
         "prettier": "bin/prettier.cjs"
       },
@@ -3129,6 +3121,7 @@
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       "dev": true,
       "license": "BSD-3-Clause",
+      "peer": true,
       "engines": {
         "node": ">=0.10.0"
       }
@@ -3255,7 +3248,6 @@
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       "dev": true,
       "license": "MIT",
-      "peer": true,
       "engines": {
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@@ -3313,7 +3305,6 @@
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       "dev": true,
       "license": "Apache-2.0",
-      "peer": true,
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
@@ -3383,7 +3374,6 @@
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       "dev": true,
       "license": "W3C",
-      "peer": true,
       "engines": {
         "node": ">= 18"
       }