diff --git a/.python-version b/.python-version
new file mode 100644
index 0000000..c84ccce
--- /dev/null
+++ b/.python-version
@@ -0,0 +1 @@
+3.10.5
diff --git a/assets/css/custom.css b/assets/css/custom.css
index 916fee1..b15191c 100644
--- a/assets/css/custom.css
+++ b/assets/css/custom.css
@@ -154,6 +154,18 @@ footer h3 {
     border-bottom: 0.25rem solid var(--preto_default);
 }
 
+.uk-button-danger {
+    background-color: var(--laranja);
+    color: var(--branco_default);
+    border-left: 0.25rem solid var(--preto_default);
+    border-bottom: 0.25rem solid var(--preto_default);
+}
+
+.uk-button-danger:hover {
+    background-color:  var(--laranja);
+    color: var(--branco_default);
+}
+
 .uk-button-default {
     background-color: var(--bege);
     border-left: 0.25rem solid var(--preto_default);
diff --git a/index.html b/index.html
index 22955af..42efbcc 100644
--- a/index.html
+++ b/index.html
@@ -86,7 +86,14 @@ <h2 class="uk-width-1-1 uk-text-center uk-margin">
                 inovação sempre haverá um coração humano, pulsante e criativo.
             </p>
         </div>
-
+        <div class="width-max-content uk-margin-auto">
+            <a href="https://www.even3.com.br/python-nordeste-2024/"
+                class="uk-button uk-button-danger uk-text-bolder uk-margin-small-right"
+                target="_blank"
+                data-uk-tooltip="title: Submeta palestras ou tutoriais e contribua para a programação da Python Nordeste">
+                Chamada de atividades 🎙️
+            </a>
+        </div>
         <img src="assets/images/DIV-COBRAS-PYTHON-NORDESTE-2024.svg" class="hr uk-margin" />
         
         <img src="assets/images/MURAL-PYTHON-NORDESTE-2024.svg" />