diff --git a/package-lock.json b/package-lock.json
index 1bcf042734df..d488f5da563c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -19,7 +19,7 @@
         "@webref/events": "file:packages/events",
         "@webref/idl": "file:packages/idl",
         "css-tree": "3.1.0",
-        "reffy": "19.1.0",
+        "reffy": "19.1.1",
         "rimraf": "6.0.1",
         "strudy": "^3.2.0",
         "webidl2": "24.4.1"
@@ -2154,9 +2154,9 @@
       }
     },
     "node_modules/reffy": {
-      "version": "19.1.0",
-      "resolved": "https://registry.npmjs.org/reffy/-/reffy-19.1.0.tgz",
-      "integrity": "sha512-xRV48gQ3cGPHe5qmZaT4HYPjbyJ45DZxPmUfRy+0UPDxsupXTyz+4+ZDJVwstWycmTUfSjtgwDjWFX7Roaql9A==",
+      "version": "19.1.1",
+      "resolved": "https://registry.npmjs.org/reffy/-/reffy-19.1.1.tgz",
+      "integrity": "sha512-eGbP+4jJKwFS+g1+MvGdJu4ljX87691oGmLlMLDh0h95eT+/+eELXIYFMmm+1wg4HUPoQKR0TcVsde45QZKiug==",
       "dev": true,
       "dependencies": {
         "ajv": "8.17.1",
@@ -2165,7 +2165,7 @@
         "fetch-filecache-for-crawling": "5.1.1",
         "puppeteer": "24.12.1",
         "semver": "^7.3.5",
-        "web-specs": "3.56.0",
+        "web-specs": "3.57.0",
         "webidl2": "24.4.1"
       },
       "bin": {
@@ -2176,9 +2176,9 @@
       }
     },
     "node_modules/reffy/node_modules/web-specs": {
-      "version": "3.56.0",
-      "resolved": "https://registry.npmjs.org/web-specs/-/web-specs-3.56.0.tgz",
-      "integrity": "sha512-o6X5DF8lCAHltuu+vw073OVAvsGVfyZiarBnqIh3HnLyIu3qg+4iBBO47uRDL5vT/C32lZG4MQzZZpZMQMPTWg==",
+      "version": "3.57.0",
+      "resolved": "https://registry.npmjs.org/web-specs/-/web-specs-3.57.0.tgz",
+      "integrity": "sha512-k8YcomotvqsJW7qopXiNP7FvqZTsk5yleZacKw7VwQ9JvRu2CvjIfdgzQdqaAXcEee/mx2tGKbNPtVDp73BZkA==",
       "dev": true
     },
     "node_modules/require-directory": {
@@ -4609,9 +4609,9 @@
       }
     },
     "reffy": {
-      "version": "19.1.0",
-      "resolved": "https://registry.npmjs.org/reffy/-/reffy-19.1.0.tgz",
-      "integrity": "sha512-xRV48gQ3cGPHe5qmZaT4HYPjbyJ45DZxPmUfRy+0UPDxsupXTyz+4+ZDJVwstWycmTUfSjtgwDjWFX7Roaql9A==",
+      "version": "19.1.1",
+      "resolved": "https://registry.npmjs.org/reffy/-/reffy-19.1.1.tgz",
+      "integrity": "sha512-eGbP+4jJKwFS+g1+MvGdJu4ljX87691oGmLlMLDh0h95eT+/+eELXIYFMmm+1wg4HUPoQKR0TcVsde45QZKiug==",
       "dev": true,
       "requires": {
         "ajv": "8.17.1",
@@ -4620,14 +4620,14 @@
         "fetch-filecache-for-crawling": "5.1.1",
         "puppeteer": "24.12.1",
         "semver": "^7.3.5",
-        "web-specs": "3.56.0",
+        "web-specs": "3.57.0",
         "webidl2": "24.4.1"
       },
       "dependencies": {
         "web-specs": {
-          "version": "3.56.0",
-          "resolved": "https://registry.npmjs.org/web-specs/-/web-specs-3.56.0.tgz",
-          "integrity": "sha512-o6X5DF8lCAHltuu+vw073OVAvsGVfyZiarBnqIh3HnLyIu3qg+4iBBO47uRDL5vT/C32lZG4MQzZZpZMQMPTWg==",
+          "version": "3.57.0",
+          "resolved": "https://registry.npmjs.org/web-specs/-/web-specs-3.57.0.tgz",
+          "integrity": "sha512-k8YcomotvqsJW7qopXiNP7FvqZTsk5yleZacKw7VwQ9JvRu2CvjIfdgzQdqaAXcEee/mx2tGKbNPtVDp73BZkA==",
           "dev": true
         }
       }
diff --git a/package.json b/package.json
index a7295e5456a9..20d9ea12bd12 100644
--- a/package.json
+++ b/package.json
@@ -35,7 +35,7 @@
     "@webref/events": "file:packages/events",
     "@webref/idl": "file:packages/idl",
     "css-tree": "3.1.0",
-    "reffy": "19.1.0",
+    "reffy": "19.1.1",
     "rimraf": "6.0.1",
     "strudy": "^3.2.0",
     "webidl2": "24.4.1"