diff --git a/vignettes/Munsell-color-conversion.Rmd b/vignettes/Munsell-color-conversion.Rmd
index cfce203c7..407d4b5af 100644
--- a/vignettes/Munsell-color-conversion.Rmd
+++ b/vignettes/Munsell-color-conversion.Rmd
@@ -13,7 +13,7 @@ knitr::opts_chunk$set(
   warning = FALSE,
   background = '#F7F7F7',
   fig.align = 'center',
-  dev = 'svg',
+  dev = 'png',
   comment = "#>"
 )