diff --git a/package-lock.json b/package-lock.json
index 13bb5d3..731877a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -11,8 +11,8 @@
       "dependencies": {
         "@markedjs/html-differ": "^4.0.2",
         "front-matter": "^4.0.2",
-        "marked": "^9.1.5",
-        "marked-repo": "https://github.com/markedjs/marked/tarball/v9.1.5"
+        "marked": "^10.0.0",
+        "marked-repo": "https://github.com/markedjs/marked/tarball/v10.0.0"
       },
       "devDependencies": {
         "eslint": "^8.53.0",
@@ -981,27 +981,27 @@
       "dev": true
     },
     "node_modules/marked": {
-      "version": "9.1.5",
-      "resolved": "https://registry.npmjs.org/marked/-/marked-9.1.5.tgz",
-      "integrity": "sha512-14QG3shv8Kg/xc0Yh6TNkMj90wXH9mmldi5941I2OevfJ/FQAFLEwtwU2/FfgSAOMlWHrEukWSGQf8MiVYNG2A==",
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/marked/-/marked-10.0.0.tgz",
+      "integrity": "sha512-YiGcYcWj50YrwBgNzFoYhQ1hT6GmQbFG8SksnYJX1z4BXTHSOrz1GB5/Jm2yQvMg4nN1FHP4M6r03R10KrVUiA==",
       "bin": {
         "marked": "bin/marked.js"
       },
       "engines": {
-        "node": ">= 16"
+        "node": ">= 18"
       }
     },
     "node_modules/marked-repo": {
       "name": "marked",
-      "version": "9.1.5",
-      "resolved": "https://github.com/markedjs/marked/tarball/v9.1.5",
-      "integrity": "sha512-ESYdlhsf+u82SDP6V229Dms0llLuzqDPkym0eX8B4kUI3HTTtD0u1fPYmfk8vdsvTQOYAdCI6H/UuWrHFhCjcg==",
+      "version": "10.0.0",
+      "resolved": "https://github.com/markedjs/marked/tarball/v10.0.0",
+      "integrity": "sha512-d0soJSJ5JpI5QqxI+l3vvpW5QMTUhAOST4ysO6wNXYlq3LTUSHwX5AIr4bdxeIY2PAsT8FeQFZ+3bmZM0pPH+Q==",
       "license": "MIT",
       "bin": {
         "marked": "bin/marked.js"
       },
       "engines": {
-        "node": ">= 16"
+        "node": ">= 18"
       }
     },
     "node_modules/minimatch": {
diff --git a/package.json b/package.json
index 083c78e..606eb94 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@markedjs/testutils",
-  "version": "9.1.5-0",
+  "version": "10.0.0-0",
   "description": "Test utilities for marked and marked extensions",
   "main": "src/index.js",
   "type": "module",
@@ -24,8 +24,8 @@
   "dependencies": {
     "@markedjs/html-differ": "^4.0.2",
     "front-matter": "^4.0.2",
-    "marked": "^9.1.5",
-    "marked-repo": "https://github.com/markedjs/marked/tarball/v9.1.5"
+    "marked": "^10.0.0",
+    "marked-repo": "https://github.com/markedjs/marked/tarball/v10.0.0"
   },
   "devDependencies": {
     "eslint": "^8.53.0",