diff --git a/Makefile b/Makefile
index 0a365b5..e485cf4 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 LEKTOR_SERVER_FLAGS=-h 127.0.0.1
 # minify javascript assets, compile scss assets
-LEKTOR_PLUGIN_FLAGS=-f scss
+LEKTOR_PLUGIN_FLAGS=-f scss -f pretifyhtml
 LEKTOR_DEPLOY_FLAGS=
 
 all: build
diff --git a/c3woc.lektorproject b/c3woc.lektorproject
index 752a419..269842e 100644
--- a/c3woc.lektorproject
+++ b/c3woc.lektorproject
@@ -29,3 +29,4 @@ url_prefix = /en/
 lektor-scss = 1.4.1
 lektor-image-resize = 1.0.0
 lektor-image-filter = 3.0
+lektor-html-pretify = 1.0.6