diff --git a/package-lock.json b/package-lock.json
index 26dd5ffd0..9e8986b36 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -15446,9 +15446,9 @@
       }
     },
     "github-markdown-css": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/github-markdown-css/-/github-markdown-css-4.0.0.tgz",
-      "integrity": "sha512-mH0bcIKv4XAN0mQVokfTdKo2OD5K8WJE9+lbMdM32/q0Ie5tXgVN/2o+zvToRMxSTUuiTRcLg5hzkFfOyBYreg==",
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/github-markdown-css/-/github-markdown-css-5.0.0.tgz",
+      "integrity": "sha512-0iojMu3BisjTYyGuQ6aVwnJZY4HgnyQtKvky25BGItHIcll4AHIWAtQ7Fy+6qQfkvjWdkHnZFRpFBQfMABr/EQ==",
       "dev": true
     },
     "github-slugger": {
diff --git a/package.json b/package.json
index e050a178b..c1078ab45 100644
--- a/package.json
+++ b/package.json
@@ -97,7 +97,7 @@
     "eslint-plugin-standard": "4.1.0",
     "esm": "3.2.25",
     "fs-extra": "10.0.0",
-    "github-markdown-css": "4.0.0",
+    "github-markdown-css": "5.0.0",
     "glob": "7.2.0",
     "gzip-size": "6.0.0",
     "highcharts": "9.3.0",