diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 3ebcca3..e6d8db4 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -14,6 +14,10 @@ Add the features/bugfixes you want, while **keeping the code style.**
 
 Comments are encouraged, but don't go overboard.
 
+Make sure to test the code before opening the PR (or open a draft PR).
+
+Ensure it supports the 5 most recent releases of Luanti, not including patch releases.
+
 After you have finished, open a PR and **clearly explain what the PR does.**
 
 If it closes an issue, be sure to mention the issue.