diff --git a/Gruntfile.js b/Gruntfile.js
index e5bb5e7bf522517d8495f4df670679e5ce9b8721..911ebc335fa57564eeec397ebdf57caa8900c370 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -58,6 +58,7 @@ module.exports = grunt => {
         cmd: (pres, env) =>
           [
             "pandoc",
+            "--verbose",
             "--from=markdown+smart",
             `../src/${pres}.md`,
             "--to=revealjs",