diff --git a/README.md b/README.md
index 20902a1..429fe50 100644
--- a/README.md
+++ b/README.md
@@ -76,3 +76,6 @@ add this to your `.gitignore`:
 This plugin will generate a file named `composer-extra-assets.lock` which can be used just like `composer.lock`. Put it
 under version control if you want to be able to install the exact same dependencies.
 
+### Warning
+
+This plugins removes (and re-installs) the complete node_modules folder. Any changes will be lost.