diff --git a/README.rst b/README.rst
index c008e1d..33376f9 100644
--- a/README.rst
+++ b/README.rst
@@ -11,8 +11,12 @@ Watching for changes and automatically regenerating
 The easiest way to do this is using nodemon_::
 
     nodemon \
-      --watch slides.rst \
-      --watch *.style \
-      --exec 'rst2pdf slides.rst --stylesheets main --break-level 1 --fit-background-mode scale'
+      --ext rst,style,txt \
+      --exec "rst2pdf slides.rst \
+        --output slides.pdf \
+        --stylesheets main \
+        --break-level 1 \
+        --fit-background-mode scale \
+        --extension-module preprocess"
 
 .. _nodemon: https://nodemon.io