diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 32f2cca..a84d6ce 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -9,6 +9,7 @@
 - Direct installation commands should follow on the next line, indented by 2 spaces and enclosed in \`\`
 - Descriptions should be clear, concise, and non-promotional
 - Descriptions should follow the link, on the same line
+- Run `npm install` and then `npm test` to verify everything is correct according to guidelines
 
 ## Quality standard