diff --git a/src/index.html b/src/index.html
index c056da3..b1be554 100644
--- a/src/index.html
+++ b/src/index.html
@@ -212,6 +212,7 @@
       <a class="contents" id="download" download="watermark.png">
         <button
           class="p-2 w-1/2 flex items-center justify-center bg-blue-500 text-blue shadow-3d-blue-button bg-gradient-to-b from-gradient-btn-from to-gradient-btn-to bg-no-repeat rounded-lg group font-medium text-white"
+          data-umami-event="watermark-download-button"
         >
           <svg
             xmlns="http://www.w3.org/2000/svg"
diff --git a/src/tanda-tangan.html b/src/tanda-tangan.html
index 7d6ae54..de40680 100644
--- a/src/tanda-tangan.html
+++ b/src/tanda-tangan.html
@@ -50,6 +50,7 @@
       <a class="contents" id="download" download="watermark.png"
         ><button
           class="p-2 w-1/2 flex items-center justify-center bg-blue-500 text-blue shadow-3d-blue-button bg-gradient-to-b from-gradient-btn-from to-gradient-btn-to bg-no-repeat rounded-lg group font-medium text-white"
+          data-umami-event="tanda-tangan-download-button"
         >
           <svg
             xmlns="http://www.w3.org/2000/svg"