X-Git-Url: https://git.openstreetmap.org./nominatim.git/blobdiff_plain/0ea099bfd5bbc4bdb3f770dbc94841f1e818151a..92e2f5ca8e270b4a236afac7242bc1e7fbf35c52:/docs/admin/Migration.md?ds=sidebyside

diff --git a/docs/admin/Migration.md b/docs/admin/Migration.md
index 11ee7f05..9b5b48c3 100644
--- a/docs/admin/Migration.md
+++ b/docs/admin/Migration.md
@@ -15,7 +15,15 @@ breaking changes. **Please read them before running the migration.**
     If you are migrating from a version <3.6, then you still have to follow
     the manual migration steps up to 3.6.
 
-## 4.0.0 -> master
+## 4.0.0 -> 4.1.0
+
+### ICU tokenizer is the new default
+
+Nominatim now installs the [ICU tokenizer](../customize/Tokenizers.md#icu-tokenizer)
+by default. This only has an effect on newly installed databases. When
+updating older databases, it keeps its installed tokenizer. If you still
+run with the legacy tokenizer, make sure to compile Nominatim with the
+PostgreSQL module, see [Installation](Installation.md#building-nominatim).
 
 ### geocodejson output changed