diff -r 2f927eae429b -r 6e3c3dd86b2f package.json
--- a/package.json	Sun Sep 06 22:12:52 2020 +0300
+++ b/package.json	Sun Sep 06 22:29:08 2020 +0300
@@ -14,6 +14,7 @@
     "@neilsustc/markdown-it-katex": "^0.5.0",
     "highlight.js": "^10.1.1",
     "markdown-it": "^11.0.0",
+    "markdown-it-checkbox": "^1.1.0",
     "markdown-it-mark": "^3.0.0",
     "markdown-it-replace-link": "^1.1.0"
   },