diff --git a/package-lock.json b/package-lock.json
index b47fc0c6..427476df 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,8 +9,8 @@
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@@ -208,9 +166,9 @@
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+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/grammarkdown/-/grammarkdown-3.3.2.tgz",
+      "integrity": "sha512-inNbeEotDr7MENqoZlms3x4gBzvK73wR2NGpNVnw4oEZcsq2METUbAh0J3VWtEqd9t2+U3poEqiJ9CDgBXr5Tg==",
       "requires": {
         "@esfx/async-canceltoken": "^1.0.0-pre.13",
-        "@esfx/cancelable": "^1.0.0-pre.13"
+        "@esfx/cancelable": "^1.0.0-pre.13",
+        "@esfx/disposable": "^1.0.0-pre.13"
       }
     },
     "has-flag": {
@@ -2360,9 +2278,9 @@
       }
     },
     "tslib": {
-      "version": "2.4.0",
-      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.4.0.tgz",
-      "integrity": "sha512-d6xOpEDfsi2CZVlPQzGeux8XMwLT9hssAsaPYExaQMuYskwb+x1x7J371tWlbBdWHroy99KnVB6qIkUbs5X3UQ=="
+      "version": "2.6.3",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-2.6.3.tgz",
+      "integrity": "sha512-xNvxJEOUiWPGhUuUdQgAJPKOOJfGnIyKySOc09XkKsgdUV/3E2zvwZYdejjmRgPCgcym1juLH3226yA7sEFJKQ=="
     },
     "type-check": {
       "version": "0.3.2",
diff --git a/package.json b/package.json
index ce3a9ca6..aec6e491 100644
--- a/package.json
+++ b/package.json
@@ -18,8 +18,8 @@
   "license": "SEE LICENSE IN https://tc39.es/ecma402/#sec-copyright-and-software-license",
   "homepage": "https://tc39.es/ecma402/",
   "dependencies": {
-    "ecmarkup": "^18.0.0",
-    "@tc39/ecma262-biblio": "2.1.2638"
+    "ecmarkup": "^19.0.0",
+    "@tc39/ecma262-biblio": "2.1.2742"
   },
   "devDependencies": {
   }