diff --git a/playground/package.json b/playground/package.json
index 4729b61..b17550a 100644
--- a/playground/package.json
+++ b/playground/package.json
@@ -18,7 +18,7 @@
     "highlight.js": "^10.4.1",
     "lodash": "^4.17.19",
     "markdown-loader": "^5.1.0",
-    "marked": "^0.7.0",
+    "marked": "^4.0.10",
     "register-service-worker": "^1.6.2",
     "vue": "^2.6.10",
     "vue-codemirror": "^4.0.6",
diff --git a/playground/yarn.lock b/playground/yarn.lock
index 7cc8e47..0cd7fc6 100644
--- a/playground/yarn.lock
+++ b/playground/yarn.lock
@@ -5432,6 +5432,11 @@ marked@^0.7.0:
   resolved "https://registry.yarnpkg.com/marked/-/marked-0.7.0.tgz#b64201f051d271b1edc10a04d1ae9b74bb8e5c0e"
   integrity sha512-c+yYdCZJQrsRjTPhUx7VKkApw9bwDkNbHUKo1ovgcfDjb2kc8rLuRbIFyXL5WOEUwzSSKo3IXpph2K6DqB/KZg==
 
+marked@^4.0.10:
+  version "4.0.10"
+  resolved "https://registry.yarnpkg.com/marked/-/marked-4.0.10.tgz#423e295385cc0c3a70fa495e0df68b007b879423"
+  integrity sha512-+QvuFj0nGgO970fySghXGmuw+Fd0gD2x3+MqCWLIPf5oxdv1Ka6b2q+z9RP01P/IaKPMEramy+7cNy/Lw8c3hw==
+
 md5.js@^1.3.4:
   version "1.3.5"
   resolved "https://registry.yarnpkg.com/md5.js/-/md5.js-1.3.5.tgz#b5d07b8e3216e3e27cd728d72f70d1e6a342005f"