diff --git a/index.html b/index.html
index 48ab34b..c5efbce 100644
--- a/index.html
+++ b/index.html
@@ -487,6 +487,24 @@ <h5 class="card-title"><a href="https://robyn.tech/" target="_blank">Robyn</a></
         </div>
       </div>
 
+      <div class="col-12 col-6 col-sm-6 col-lg-3 mb-4">
+        <div class="card">
+          <div class="card-header" style="background-color:#133f52;">
+            <h3 class="text-end">
+              <a style="color:#fff" href="https://github.com/twisted/klein" target="_blank">
+                Klein
+              </a>
+            </h3>
+          </div>
+          <div class="card-body text-end">
+            <blockquote class="mb-0">
+              <p>Klein is a micro-framework for developing production-ready web services with Python.</p>
+              <footer class="blockquote-footer mt-2 text-end">werkzeug + twisted.web</footer>
+            </blockquote>
+          </div>
+        </div>
+      </div>
+
       <div class="col-12 col-6 col-sm-6 col-lg-3 mb-4">
         <div class="card">
           <a class="text-center m-3" href="https://frappeframework.com/" target="_blank">