diff --git a/package-lock.json b/package-lock.json
index 9945481..d68088b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -253,6 +253,7 @@
       "version": "1.0.10",
       "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
       "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
+      "dev": true,
       "requires": {
         "sprintf-js": "~1.0.2"
       }
@@ -1355,15 +1356,22 @@
       "integrity": "sha512-i2sY04nal5jDcagM3FMfG++T69GEEM8CYuOfeOIvmXzOIcwE9a/CJPR0MFM97pYMj/u10lzz7/zd7+qwhrBTqQ=="
     },
     "markdown-it": {
-      "version": "11.0.1",
-      "resolved": "https://registry.npmjs.org/markdown-it/-/markdown-it-11.0.1.tgz",
-      "integrity": "sha512-aU1TzmBKcWNNYvH9pjq6u92BML+Hz3h5S/QpfTFwiQF852pLT+9qHsrhM9JYipkOXZxGn+sGH8oyJE9FD9WezQ==",
+      "version": "12.0.0",
+      "resolved": "https://registry.npmjs.org/markdown-it/-/markdown-it-12.0.0.tgz",
+      "integrity": "sha512-zPq5nGY5L8FXVwffjbXwPqzh9TgkrZ4NDTWuiX5wUP0l/wvmlnJR+6ebbNlLqYzB7erhlAwxQusgXa1VqojTQg==",
       "requires": {
-        "argparse": "^1.0.7",
+        "argparse": "^2.0.1",
         "entities": "~2.0.0",
         "linkify-it": "^3.0.1",
         "mdurl": "^1.0.1",
         "uc.micro": "^1.0.5"
+      },
+      "dependencies": {
+        "argparse": {
+          "version": "2.0.1",
+          "resolved": "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz",
+          "integrity": "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q=="
+        }
       }
     },
     "matrix-js-sdk": {
@@ -1866,7 +1874,8 @@
     "sprintf-js": {
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
-      "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw="
+      "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=",
+      "dev": true
     },
     "sshpk": {
       "version": "1.16.1",
diff --git a/package.json b/package.json
index f167852..e600607 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "@actions/core": "^1.2.6",
     "@actions/github": "^4.0.0",
     "@vercel/ncc": "^0.24.1",
-    "markdown-it": "^11.0.1",
+    "markdown-it": "^12.0.0",
     "matrix-js-sdk": "^8.5.0"
   },
   "devDependencies": {