diff --git a/supysonic/db.py b/supysonic/db.py
index 0c745cd..4ab3a45 100644
--- a/supysonic/db.py
+++ b/supysonic/db.py
@@ -31,7 +31,7 @@ from playhouse.db_url import parseresult_to_dict, schemes
 from urllib.parse import urlparse
 from uuid import UUID, uuid4
 
-SCHEMA_VERSION = "20230115"
+SCHEMA_VERSION = "20230331"
 
 
 def now():
diff --git a/supysonic/schema/migration/mysql/20230331.sql b/supysonic/schema/migration/mysql/20230331.sql
new file mode 100644
index 0000000..030a7bf
--- /dev/null
+++ b/supysonic/schema/migration/mysql/20230331.sql
@@ -0,0 +1,5 @@
+START TRANSACTION;
+
+UPDATE track SET bitrate=bitrate/1000 WHERE bitrate > 16000 AND path NOT LIKE '%.wav';
+
+COMMIT;
diff --git a/supysonic/schema/migration/postgres/20230331.sql b/supysonic/schema/migration/postgres/20230331.sql
new file mode 100644
index 0000000..030a7bf
--- /dev/null
+++ b/supysonic/schema/migration/postgres/20230331.sql
@@ -0,0 +1,5 @@
+START TRANSACTION;
+
+UPDATE track SET bitrate=bitrate/1000 WHERE bitrate > 16000 AND path NOT LIKE '%.wav';
+
+COMMIT;
diff --git a/supysonic/schema/migration/sqlite/20230331.sql b/supysonic/schema/migration/sqlite/20230331.sql
new file mode 100644
index 0000000..45e7b22
--- /dev/null
+++ b/supysonic/schema/migration/sqlite/20230331.sql
@@ -0,0 +1,8 @@
+COMMIT;
+PRAGMA foreign_keys = OFF;
+BEGIN TRANSACTION;
+
+UPDATE track SET bitrate=bitrate/1000 WHERE bitrate > 16000 AND path NOT LIKE '%.wav';
+
+COMMIT;
+BEGIN TRANSACTION;