diff --git a/package-lock.json b/package-lock.json
index e180111954..3df28a6837 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3349,9 +3349,9 @@
       }
     },
     "marked": {
-      "version": "0.8.2",
-      "resolved": "https://registry.npmjs.org/marked/-/marked-0.8.2.tgz",
-      "integrity": "sha512-EGwzEeCcLniFX51DhTpmTom+dSA/MG/OBUDjnWtHbEnjAH180VzUeAw+oE4+Zv+CoYBWyRlYOTR0N8SO9R1PVw==",
+      "version": "4.0.10",
+      "resolved": "https://registry.npmjs.org/marked/-/marked-4.0.10.tgz",
+      "integrity": "sha512-+QvuFj0nGgO970fySghXGmuw+Fd0gD2x3+MqCWLIPf5oxdv1Ka6b2q+z9RP01P/IaKPMEramy+7cNy/Lw8c3hw==",
       "dev": true
     },
     "maximatch": {
diff --git a/package.json b/package.json
index 6208cdb49f..0c4a7f6252 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,7 @@
     "esm": "3.2.25",
     "gh-pages": "^2.0.1",
     "lit-html": "1.2.1",
-    "marked": "0.8.2",
+    "marked": "4.0.10",
     "rimraf": "^3.0.2",
     "rollup": "2.3.2",
     "rollup-plugin-terser": "5.3.0",