diff --git a/examples/rayon_demo/.gitignore b/examples/rayon_demo/.gitignore
index 39384f4..6690ada 100644
--- a/examples/rayon_demo/.gitignore
+++ b/examples/rayon_demo/.gitignore
@@ -2,3 +2,4 @@
 /target/
 /tokio_demo.a2h
 /tokio_demo.a2l
+/mandelbrot.png
diff --git a/examples/rayon_demo/CANape.png b/examples/rayon_demo/CANape.png
index 09cbf3b..c50bd19 100644
Binary files a/examples/rayon_demo/CANape.png and b/examples/rayon_demo/CANape.png differ
diff --git a/examples/rayon_demo/README.md b/examples/rayon_demo/README.md
index 4788f40..7c3e39f 100644
--- a/examples/rayon_demo/README.md
+++ b/examples/rayon_demo/README.md
@@ -3,8 +3,8 @@
 Use CANape to visualize start and stop of synchronous tasks in a rayon worker thread pool.  
 Taken from the mandelbrot rayon example in the book "Programming Rust" by Jim Blandy and Jason Orendorff.  
 
+Image is recalutated when a parameter is changed.
+
 ![CANape](CANape.png)
 
   
-    
-![mandel](mandel.png)
\ No newline at end of file
diff --git a/examples/rayon_demo/mandelbrot.png b/examples/rayon_demo/mandelbrot.png
index 7b6e885..529ed9a 100644
Binary files a/examples/rayon_demo/mandelbrot.png and b/examples/rayon_demo/mandelbrot.png differ