diff --git a/index.html b/index.html
index 8e95dcc..a3c45b8 100644
--- a/index.html
+++ b/index.html
@@ -13,6 +13,8 @@
 <load src="/src/parts/modals.html" />
 <script src="https://unpkg.com/lucide@latest"></script>
 <script src="https://cdn.jsdelivr.net/npm/markdown-it@14.1.0/dist/markdown-it.min.js"></script>
+<script src="https://cdn.jsdelivr.net/npm/katex@0.16.11/dist/katex.min.js"></script>
+<script src="https://cdn.jsdelivr.net/npm/markdown-it-katex@2.0.3/dist/markdown-it-katex.min.js"></script>
 <script src="https://cdn.jsdelivr.net/gh/highlightjs/cdn-release@11.9.0/build/highlight.min.js"></script>
 <script src="https://cdn.jsdelivr.net/npm/localforage@1.10.0/dist/localforage.min.js"></script>
 <script type="module" src="/src/main.js"></script>