diff --git a/eleventy.config.js b/eleventy.config.js
index 6631dd5..4cb43cf 100644
--- a/eleventy.config.js
+++ b/eleventy.config.js
@@ -6,8 +6,8 @@ module.exports = (config) => {
 
   config.addPassthroughCopy('src/assets/css/**/*');
 
-  config.addLayoutAlias('default', 'default.html');
-  config.addLayoutAlias('post', 'post.html');
+  config.addLayoutAlias('default', 'default.njk');
+  config.addLayoutAlias('post', 'post.njk');
 
   config.addCollection('posts', require('./lib/collections/posts'));
 
diff --git a/src/404.html b/src/404.njk
similarity index 100%
rename from src/404.html
rename to src/404.njk
diff --git a/src/_layouts/default.html b/src/_layouts/default.njk
similarity index 93%
rename from src/_layouts/default.html
rename to src/_layouts/default.njk
index 5d334cd..67c27cd 100644
--- a/src/_layouts/default.html
+++ b/src/_layouts/default.njk
@@ -17,7 +17,7 @@ <h1 class="top__title"><a href="{{ '/' | url }}">Blocos de Notas</a></h1>
     </header>
 
     <main class="page-content">
-      <div class="wrapper">{{ content | raw }}</div>
+      <div class="wrapper">{{ content | safe }}</div>
     </main>
 
     <footer class="site-footer">
diff --git a/src/_layouts/post.html b/src/_layouts/post.njk
similarity index 83%
rename from src/_layouts/post.html
rename to src/_layouts/post.njk
index da50749..f3f8094 100644
--- a/src/_layouts/post.html
+++ b/src/_layouts/post.njk
@@ -11,5 +11,5 @@ <h1 class="post-title">{{ title }}</h1>
       </time>
     </p>
   </header>
-  <div class="post-content">{{ content }}</div>
+  <div class="post-content">{{ content | safe }}</div>
 </article>
diff --git a/src/index.html b/src/index.njk
similarity index 93%
rename from src/index.html
rename to src/index.njk
index 0dc97ba..75e36e2 100644
--- a/src/index.html
+++ b/src/index.njk
@@ -8,7 +8,7 @@
       <li>
         <span class="post-meta">{{ post.date | readableDate }}</span>
         <h2>
-          <a class="post-link" href="{{ post.url | url }}">{{ post.data.title | raw }}</a>
+          <a class="post-link" href="{{ post.url | url }}">{{ post.data.title | safe }}</a>
         </h2>
       </li>
     {%- endfor -%}