diff --git a/bin/mdshow b/bin/mdshow
index 23bde4393e758935d372fde4fab9590316f0dc79..026625fc1982f45878766bf784ca14ca0fb61da4 100755
--- a/bin/mdshow
+++ b/bin/mdshow
@@ -97,7 +97,7 @@ $(MDSHOW_CONFIG)/reveal.js:
 	mv $@/reveal.js-4.1.0/.??* $@/reveal.js-4.1.0/* $@
 	rmdir $@/reveal.js-4.1.0
 	cd $@ && \
-		npm install && npm add node-jq decktape gulp
+		npm install && npm add node-jq decktape gulp reveal-plantuml
 	# workarounds for the new reveal-js release
 	cd $@/dist && \
 		ln -s ../plugin .
diff --git a/default.revealjs b/default.revealjs
index ec3a6b711d82befd3d5d41809ae552a233f2677b..2668128be6033116de9ebb81244ef58328e475ed 100644
--- a/default.revealjs
+++ b/default.revealjs
@@ -85,6 +85,7 @@ $body$
   <script src="$revealjs-url$/plugin/search/search.js"></script>
   <script src="$revealjs-url$/plugin/notes/notes.js"></script>
   <script src="$revealjs-url$/plugin/highlight/highlight.js"></script>
+  <script src="$revealjs-url$/node_modules/reveal-plantuml/dist/reveal-plantuml.min.js"></script>
 
   <script>
 
@@ -290,7 +291,7 @@ $if(mathjax)$
 $endif$
 
         // Optional reveal.js plugins
-        plugins: [ RevealHighlight, RevealZoom, RevealNotes, RevealSearch, RevealMath ]
+        plugins: [ RevealHighlight, RevealZoom, RevealNotes, RevealSearch, RevealMath, RevealPlantUML ]
       });
     </script>
   $for(include-after)$