diff --git a/source.config.ts b/source.config.ts
index 2cacb528..f080fc81 100644
--- a/source.config.ts
+++ b/source.config.ts
@@ -1,9 +1,17 @@
 import { defineConfig } from 'fumadocs-mdx/config';
 import { rehypeCodeDefaultOptions } from 'fumadocs-core/mdx-plugins';
+import type { ShikiTransformer } from 'shiki';
 import { remarkCooldowns } from './lib/remark/cooldowns';
 import { remarkFunctionLinks } from './lib/remark/function-links';
 import { remarkCachedImages } from './lib/remark/images';
 
+const transformerLineNumbers: ShikiTransformer = {
+  name: 'shiki-transformer-line-numbers',
+  pre(node) {
+    node.properties['data-line-numbers'] = '';
+  },
+};
+
 export default defineConfig({
   mdxOptions: {
     // prepended so the generated cooldown headings are picked up by Fumadocs'
@@ -27,6 +35,10 @@ export default defineConfig({
       langAlias: {
         discord: 'text',
       },
+      transformers: [
+        ...(rehypeCodeDefaultOptions.transformers ?? []),
+        transformerLineNumbers,
+      ],
     },
   },
-});
+});
\ No newline at end of file