diff --git a/features/compression-dictionary-transport.yml b/features/compression-dictionary-transport.yml
index f85cc4b4c24..6242388d914 100644
--- a/features/compression-dictionary-transport.yml
+++ b/features/compression-dictionary-transport.yml
@@ -1,6 +1,6 @@
 name: Compression Dictionary Transport
 description: Compression Dictionary Transport is a mechanism for using designated HTTP responses as an external dictionary for future HTTP responses for compression schemes that support using external dictionaries (e.g., Brotli and Zstandard)
-spec: https://httpwg.org/http-extensions/draft-ietf-httpbis-compression-dictionary.html
+spec: https://www.rfc-editor.org/rfc/rfc9842
 compat_features:
   - html.elements.link.rel.compression-dictionary
   - http.headers.Accept-Encoding.dcb
diff --git a/package-lock.json b/package-lock.json
index 24ec096c126..d6c4bda7efb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -38,7 +38,7 @@
         "typescript": "^5.9.3",
         "typescript-eslint": "^8.45.0",
         "unified": "^11.0.5",
-        "web-specs": "^3.65.0",
+        "web-specs": "^3.66.0",
         "winston": "^3.18.3",
         "yaml": "^2.8.1",
         "yargs": "^18.0.0"
@@ -6248,9 +6248,9 @@
       }
     },
     "node_modules/web-specs": {
-      "version": "3.65.0",
-      "resolved": "https://registry.npmjs.org/web-specs/-/web-specs-3.65.0.tgz",
-      "integrity": "sha512-GjbuyukdmZRBDTW1/HBZoCiCT5rQ2snqjw1bID+S07Oep31uA8N0cfxogSZOFsMVK8RZAhhEFXxyk+OniV9tOA==",
+      "version": "3.66.0",
+      "resolved": "https://registry.npmjs.org/web-specs/-/web-specs-3.66.0.tgz",
+      "integrity": "sha512-FojLocglAxtCVau46MIDcxR5yIGfxrD1PA7kAGJ0gBDLAfbFxJGElP0cdHZLmGN1iRaVxbFZnxECVS87+JUYwA==",
       "dev": true,
       "license": "CC0-1.0"
     },
diff --git a/package.json b/package.json
index 4703fcccefd..465af3dbe84 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,7 @@
     "typescript": "^5.9.3",
     "typescript-eslint": "^8.45.0",
     "unified": "^11.0.5",
-    "web-specs": "^3.65.0",
+    "web-specs": "^3.66.0",
     "winston": "^3.18.3",
     "yaml": "^2.8.1",
     "yargs": "^18.0.0"