If you are migrating from a version <3.6, then you still have to follow
the manual migration steps up to 3.6.
-## 3.7.0 -> master
+## 3.7.0 -> 4.0.0
### NOMINATIM_PHRASE_CONFIG removed
and still work with a custom `phrase-settings.php`, you need to manually
convert it into a json format.
+### PHP utils removed
+
+The old PHP utils have now been removed completely. You need to switch to
+the appropriate functions of the nominatim command line tool. See
+[Introducing `nominatim` command line tool](#introducing-nominatim-command-line-tool)
+below.
+
## 3.6.0 -> 3.7.0
### New format and name of configuration file