diff --git a/themes/conventional-commits/package.json b/themes/conventional-commits/package.json
index 00d258ca..ed1cbd4a 100644
--- a/themes/conventional-commits/package.json
+++ b/themes/conventional-commits/package.json
@@ -20,7 +20,7 @@
   "license": "MIT",
   "dependencies": {
     "anchor-js": "4.3.1",
-    "github-markdown-css": "2.10.0"
+    "github-markdown-css": "5.5.1"
   },
   "devDependencies": {
     "autoprefixer": "10.4.12",