diff --git a/.changeset/three-humans-promise.md b/.changeset/three-humans-promise.md
new file mode 100644
index 000000000000..1d1e76756260
--- /dev/null
+++ b/.changeset/three-humans-promise.md
@@ -0,0 +1,5 @@
+---
+'@astrojs/tailwind': patch
+---
+
+Update README to reference a `.cjs` config file
diff --git a/packages/integrations/tailwind/README.md b/packages/integrations/tailwind/README.md
index 9eaf95452741..6d118a79c0e3 100644
--- a/packages/integrations/tailwind/README.md
+++ b/packages/integrations/tailwind/README.md
@@ -93,7 +93,7 @@ import tailwind from '@astrojs/tailwind';
 export default {
   integrations: [tailwind({
     // Example: Provide a custom path to a Tailwind config file
-    config: { path: './custom-config.js' },
+    config: { path: './custom-config.cjs' },
   })],
 }
 ```