diff --git a/_layouts/default.html b/_layouts/default.html
index 3898715..8a7d8bb 100644
--- a/_layouts/default.html
+++ b/_layouts/default.html
@@ -100,6 +100,7 @@
     <script src="{{ site.baseurl }}/assets/js/jquery.min.js"></script>
     <script src="{{ site.baseurl }}/assets/js/bootstrap.min.js"></script>
     <script src="{{ site.baseurl }}/assets/js/theme.js"></script>
+    <script src="{{ site.baseurl }}/assets/js/date.js"></script>
 
   </body>
 </html>
diff --git a/_layouts/post.html b/_layouts/post.html
index 0fcf514..db043e3 100644
--- a/_layouts/post.html
+++ b/_layouts/post.html
@@ -54,22 +54,37 @@ <h1 class="posttitle">{{ page.title }}</h1>
     </p>
 
     <!-- How to cite us -->
-    <div class="mt-4">
-      <h2>Cite este artigo</h2>
-      <p class="bg-light p-3">
-        {% if page.author %}
-          {% assign names = author.citation_name | split: " " %}
-            {{ names.first | upcase }}
-            {{ names | slice: 1, names.size
-              | join: " "
-              | split: "."
-              | join: "." }}.
-        {% endif %}
-        {{ page.title }}. <strong>{{ site.title }}</strong>,
-        {% include /functions/date_to_string_pt.html date=page.date %}.
-        Disponível em: {{ site.url }}{{ site.baseurl }}{{ page.url }}.
-        Acesso em: {% include /functions/date_to_string_pt.html date=site.time %}.
-      </p>
+    <div class="accordion" id="accordionCitation">
+      <div class="accordion-item">
+        <h2 class="accordion-header" id="headingOne">
+          <button class="btn" type="button" data-bs-toggle="collapse" data-bs-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
+            <div class="d-flex align-items-center">
+              <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-chevron-down" viewBox="0 0 16 16">
+  <path fill-rule="evenodd" d="M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z"/>
+              </svg>
+              Cite este artigo
+            </div>
+          </button>
+        </h2>
+        <div id="collapseOne" class="accordion-collapse collapse" aria-labelledby="headingOne" data-bs-parent="#accordionCitation">
+          <div class="accordion-body">
+            <p class="bg-light p-3">
+            {% if page.author %}
+              {% assign names = author.citation_name | split: " " %}
+                {{ names.first | upcase }}
+                {{ names | slice: 1, names.size
+                  | join: " "
+                  | split: "."
+                  | join: "." }}.
+            {% endif %}
+            {{ page.title }}. <strong>{{ site.title }}</strong>,
+            {% include /functions/date_to_string_pt.html date=page.date %}.
+            Disponível em: {{ site.url }}{{ site.baseurl }}{{ page.url }}.
+            Acesso em: <span id="curDate"></span>
+            </p>
+          </div>
+        </div>
+      </div>
     </div>
 
     <!-- Prev/Next -->
diff --git a/assets/js/date.js b/assets/js/date.js
new file mode 100644
index 0000000..a6784ea
--- /dev/null
+++ b/assets/js/date.js
@@ -0,0 +1,20 @@
+//
+// date.js: update dynamically the date
+//
+
+function getFormattedCurDate() {
+  const date = new Date();
+  const options = { day: 'numeric', month: 'long', year: 'numeric' };
+  return date.toLocaleDateString('pt-BR', options);
+}
+
+function updateDate() {
+  const element = document.getElementById('curDate');
+  if (element) {
+    element.textContent = getFormattedCurDate();
+  }
+}
+
+window.onload = function() {
+  updateDate();
+};