diff --git a/nominatim/tools/migration.py b/nominatim/tools/migration.py
index 94058f33..284bd316 100644
--- a/nominatim/tools/migration.py
+++ b/nominatim/tools/migration.py
@@ -216,3 +216,14 @@ def create_tiger_housenumber_index(conn, **_):
                             ON location_property_tiger
                             USING btree(parent_place_id)
                             INCLUDE (startnumber, endnumber) """)
+
+
+@_migration(4, 0, 99, 1)
+def create_interpolation_index_on_place(conn, **_):
+    """ Create idx_place_interpolations for lookup of interpolation lines
+        on updates.
+    """
+    with conn.cursor() as cur:
+        cur.execute("""CREATE INDEX IF NOT EXISTS idx_place_interpolations
+                       ON place USING gist(geometry)
+                       WHERE osm_type = 'W' and address ? 'interpolation'""")
diff --git a/nominatim/version.py b/nominatim/version.py
index cb7f59bc..b666c8e7 100644
--- a/nominatim/version.py
+++ b/nominatim/version.py
@@ -20,11 +20,11 @@ Version information for Nominatim.
 # to 99 to make sure that the migration is applied when updating from a
 # patch release to the next minor version. Patch releases usually shouldn't
 # have migrations in them. When they are needed, then make sure that the
-# migration can reapplied and set the migration version to the appropriate
+# migration can be reapplied and set the migration version to the appropriate
 # patch level when cherry-picking the commit with the migration.
 #
 # Released versions always have a database patch level of 0.
-NOMINATIM_VERSION = (4, 0, 99, 1)
+NOMINATIM_VERSION = (4, 0, 99, 2)
 
 POSTGRESQL_REQUIRED_VERSION = (9, 5)
 POSTGIS_REQUIRED_VERSION = (2, 2)