diff --git a/docs/TAILWINDCSS.md b/docs/TAILWINDCSS.md
index 742cdc89..9c77a9f9 100644
--- a/docs/TAILWINDCSS.md
+++ b/docs/TAILWINDCSS.md
@@ -52,7 +52,7 @@ const purgecssOptions = {
   // Leave css definitions starting with an underscore untouched.
   // This prevents css definitions generated by ember-css-modules
   // from being purged.
-  whitelistPatterns: [/^_/]
+  safelist: [/^_/]
 };
 
 let cssModulesPlugins = [