diff --git a/README.md b/README.md
index 4c0274e..153f261 100644
--- a/README.md
+++ b/README.md
@@ -77,7 +77,7 @@ Specifically have a look at `eleventy.config.js` to see if you want to configure
 npm install
 ```
 
-### 4. Edit `_data/metadata.json`
+### 4. Edit `_data/metadata.js`
 
 ### 5. Run Eleventy
 
diff --git a/_includes/layouts/home.njk b/_includes/layouts/home.njk
index 80bf593..cfb97f6 100644
--- a/_includes/layouts/home.njk
+++ b/_includes/layouts/home.njk
@@ -5,7 +5,7 @@ layout: layouts/base.njk
 {%- css %}{% include "public/css/message-box.css" %}{% endcss %}
 <div class="message-box">
 	<ol>
-		<li>Edit the <code>_data/metadata.json</code> with your blog’s information.</li>
+		<li>Edit the <code>_data/metadata.js</code> with your blog’s information.</li>
 		<li>(Optional) Edit <code>eleventy.config.js</code> with your <a href="https://www.11ty.dev/docs/config/">configuration preferences</a>.</li>
 		<li>Delete this message from <code>_includes/layouts/home.njk</code>.</li>
 	</ol>
diff --git a/content/feed/feed.njk b/content/feed/feed.njk
index 7b41d07..a47a7e8 100755
--- a/content/feed/feed.njk
+++ b/content/feed/feed.njk
@@ -1,5 +1,5 @@
 ---
-# Metadata comes from _data/metadata.json
+# Metadata comes from _data/metadata.js
 permalink: /feed/feed.xml
 ---
 <?xml version="1.0" encoding="utf-8"?>
diff --git a/content/feed/json.njk b/content/feed/json.njk
index 35bde56..3b33b59 100644
--- a/content/feed/json.njk
+++ b/content/feed/json.njk
@@ -1,5 +1,5 @@
 ---
-# Metadata comes from _data/metadata.json
+# Metadata comes from _data/metadata.js
 permalink: /feed/feed.json
 ---
 {