diff --git a/doc/PRE_UPGRADE.d/2.md b/doc/PRE_UPGRADE.d/2.0.0~ynh1.md
similarity index 78%
rename from doc/PRE_UPGRADE.d/2.md
rename to doc/PRE_UPGRADE.d/2.0.0~ynh1.md
index dbc0ae5..8296f65 100644
--- a/doc/PRE_UPGRADE.d/2.md
+++ b/doc/PRE_UPGRADE.d/2.0.0~ynh1.md
@@ -3,4 +3,4 @@ Since version 2, æneria must be installed under its own domain.
 If æneria is currently installed under a path, before upgrading, change æneria URL:
 
 * delete the path
-* switch to a new dedicated domain (if needed)
\ No newline at end of file
+* switch to a new dedicated domain (if needed)