diff --git a/pep-0387.txt b/pep-0387.txt
index ed40c99df..031059c1d 100644
--- a/pep-0387.txt
+++ b/pep-0387.txt
@@ -131,8 +131,11 @@ several releases:
    incompatibility is expected to become the default and a link to an
    issue that users can post feedback to.
 
-3. Wait for the warning to appear in at least two major Python
-   versions. It's fine to wait more than two releases.
+3. Wait for the warning to appear in at least two minor Python
+   versions of the same major version, or one minor version in an older
+   major version (e.g. for a warning in Python 3.10, you either wait
+   until at least Python 3.12 or Python 4.0 to make the change).
+   It's fine to wait more than two releases.
 
 4. See if there's any feedback.  Users not involved in the original
    discussions may comment now after seeing the warning.  Perhaps