diff --git a/revealjs/_assets/reveal.js b/revealjs/_assets/reveal.js
index 33bed47..15815ef 160000
--- a/revealjs/_assets/reveal.js
+++ b/revealjs/_assets/reveal.js
@@ -1 +1 @@
-Subproject commit 33bed47daca3f08c396215415e6ece005970734a
+Subproject commit 15815efe05ca69c35ce66cfdbf93316e1db66ecb
diff --git a/revealjs/_templates/index.html.j2 b/revealjs/_templates/index.html.j2
index d220ffb..b32397f 100644
--- a/revealjs/_templates/index.html.j2
+++ b/revealjs/_templates/index.html.j2
@@ -4,7 +4,7 @@
     <meta charset="utf-8">
     <title>{{ title }}</title>
     <meta name="viewport" content="width=device-width, initial-scale=1">
-    <link rel="stylesheet" href="../_assets/reveal.js/css/reveal.css">
+    <link rel="stylesheet" href="../_assets/reveal.js/dist/reveal.css">
     <link rel="stylesheet" href="../_assets/reveal.js/css/print/pdf.css" media="print">
     <link rel="stylesheet" href="{{ theme }}">
     <link rel="stylesheet" href="../_assets/highlight.js/solarized-dark.css">
@@ -22,8 +22,12 @@
         {{ content }}
       </div>
     </div>
-    <script src="../_assets/reveal.js/js/reveal.js"></script>
-    <script>
+    <script type="module">
+      import Reveal from '../_assets/reveal.js/dist/reveal.esm.js'
+      import Highlight from '../_assets/reveal.js/plugin/highlight/highlight.esm.js'
+      import Zoom from '../_assets/reveal.js/plugin/zoom/zoom.esm.js'
+      import Notes from '../_assets/reveal.js/plugin/notes/notes.esm.js'
+
       Reveal.initialize({
         controls: {{ controls | lower }},
         progress: {{ progress | lower }},
@@ -39,23 +43,7 @@
         transition: '{{ transition }}',
         backgroundTransition: '{{ background_transition }}',
 
-        //math: {
-        //  mathjax: '../_assets/MathJax/unpacked/MathJax.js',
-        //  config: 'TeX-AMS_HTML-full'
-        //},
-
-        dependencies: [
-          // Syntax highlight for <code> elements
-          { src: '../_assets/reveal.js/plugin/highlight/highlight.js', async: true, callback: () => hljs.initHighlightingOnLoad() },
-          // Zoom in and out with Alt+click
-          { src: '../_assets/reveal.js/plugin/zoom-js/zoom.js', async: true },
-          // Speaker notes
-          { src: '../_assets/reveal.js/plugin/notes/notes.js', async: true },
-          {% if mathjax -%}
-          // LaTeX rendering
-          //{ src: '../_assets/reveal.js/plugin/math/math.js', async: true }
-          {%- endif %}
-        ]
+        plugins: [ Highlight, Zoom, Notes ],
       });
     </script>
   </body>
diff --git a/revealjs/alternative_energy/theme.css b/revealjs/alternative_energy/theme.css
index dd28823..51c3a44 100644
--- a/revealjs/alternative_energy/theme.css
+++ b/revealjs/alternative_energy/theme.css
@@ -1,4 +1,4 @@
-@import url(../_assets/reveal.js/css/theme/black.css);
+@import url(../_assets/reveal.js/dist/theme/black.css);
 @import url(../_assets/fonts/TeXGyreAdventor/index.css);
 sup {
   font-size: 0.75em !important;
diff --git a/revealjs/information-technology/theme.css b/revealjs/information-technology/theme.css
index 0daba02..4d3735e 100644
--- a/revealjs/information-technology/theme.css
+++ b/revealjs/information-technology/theme.css
@@ -1,4 +1,4 @@
-@import "../_assets/reveal.js/css/theme/black.css";
+@import "../_assets/reveal.js/dist/theme/black.css";
 @import "../_assets/fonts/Rajdhani/index.css";
 
 .reveal h1,
diff --git a/revealjs/kz-dachau/theme.css b/revealjs/kz-dachau/theme.css
index 2bbd4e3..1283d9b 100644
--- a/revealjs/kz-dachau/theme.css
+++ b/revealjs/kz-dachau/theme.css
@@ -1,4 +1,4 @@
-@import "../_assets/reveal.js/css/theme/black.css";
+@import "../_assets/reveal.js/dist/theme/black.css";
 @import "../_assets/fonts/Rajdhani/index.css";
 @import "../_assets/styles/quote.css";
 
diff --git a/revealjs/laser/handout.pdf b/revealjs/laser/handout.pdf
deleted file mode 100644
index 34a88cb..0000000
Binary files a/revealjs/laser/handout.pdf and /dev/null differ
diff --git a/revealjs/laser/theme.css b/revealjs/laser/theme.css
index 4ef1618..68726a6 100644
--- a/revealjs/laser/theme.css
+++ b/revealjs/laser/theme.css
@@ -1,4 +1,4 @@
-@import "../_assets/reveal.js/css/theme/black.css";
+@import "../_assets/reveal.js/dist/theme/black.css";
 @import "../_assets/fonts/Fira Sans/index.css";
 @import "../_assets/styles/quote.css";
 
diff --git a/revealjs/machtergreifung/theme.css b/revealjs/machtergreifung/theme.css
index 06143bd..8230521 100644
--- a/revealjs/machtergreifung/theme.css
+++ b/revealjs/machtergreifung/theme.css
@@ -1,4 +1,4 @@
-@import "../_assets/reveal.js/css/theme/black.css";
+@import "../_assets/reveal.js/dist/theme/black.css";
 @import "../_assets/fonts/Rajdhani/index.css";
 @import "../_assets/styles/quote.css";
 
diff --git a/revealjs/neptun/theme.css b/revealjs/neptun/theme.css
index fe4c6ba..249fdd0 100644
--- a/revealjs/neptun/theme.css
+++ b/revealjs/neptun/theme.css
@@ -1,4 +1,4 @@
-@import url(../_assets/reveal.js/css/theme/black.css);
+@import url(../_assets/reveal.js/dist/theme/black.css);
 @import url(../_assets/fonts/TeXGyreAdventor/index.css);
 
 .reveal,
diff --git a/revealjs/passwords/theme.css b/revealjs/passwords/theme.css
index 0aad415..dc06821 100644
--- a/revealjs/passwords/theme.css
+++ b/revealjs/passwords/theme.css
@@ -1,4 +1,4 @@
-@import "../_assets/reveal.js/css/theme/black.css";
+@import "../_assets/reveal.js/dist/theme/black.css";
 @import "../_assets/fonts/Iosevka/index.css";
 
 .reveal code {
diff --git a/revealjs/snowden/theme.css b/revealjs/snowden/theme.css
index 1ae5698..96b12f0 100644
--- a/revealjs/snowden/theme.css
+++ b/revealjs/snowden/theme.css
@@ -1,4 +1,4 @@
-@import "../_assets/reveal.js/css/theme/black.css";
+@import "../_assets/reveal.js/dist/theme/black.css";
 @import "../_assets/fonts/Fira Sans/index.css";
 
 body * {
diff --git a/revealjs/south-africa-current-government/index.pdf b/revealjs/south-africa-current-government/index.pdf
deleted file mode 100644
index a663b7e..0000000
Binary files a/revealjs/south-africa-current-government/index.pdf and /dev/null differ
diff --git a/revealjs/south-africa-current-government/theme.css b/revealjs/south-africa-current-government/theme.css
index 4d28c12..5b43d3b 100644
--- a/revealjs/south-africa-current-government/theme.css
+++ b/revealjs/south-africa-current-government/theme.css
@@ -1,4 +1,4 @@
-@import "../_assets/reveal.js/css/theme/black.css";
+@import "../_assets/reveal.js/dist/theme/black.css";
 @import "../_assets/fonts/Fira Sans/index.css";
 
 .reveal h1,
diff --git a/revealjs/suchmaschine/theme.css b/revealjs/suchmaschine/theme.css
index 085f693..facb441 100644
--- a/revealjs/suchmaschine/theme.css
+++ b/revealjs/suchmaschine/theme.css
@@ -1,4 +1,4 @@
-@import "../_assets/reveal.js/css/theme/black.css";
+@import "../_assets/reveal.js/dist/theme/black.css";
 @import "../_assets/fonts/Fira Sans/index.css";
 
 .reveal h1,
diff --git a/revealjs/wahl-thüringen/theme.css b/revealjs/wahl-thüringen/theme.css
index bbbca70..ac0586d 100644
--- a/revealjs/wahl-thüringen/theme.css
+++ b/revealjs/wahl-thüringen/theme.css
@@ -1,4 +1,4 @@
-@import "../_assets/reveal.js/css/theme/black.css";
+@import "../_assets/reveal.js/dist/theme/black.css";
 @import "../_assets/fonts/Fira Sans/index.css";
 
 .reveal h1,