diff --git a/docs/Web-Flow-1.6.0.md b/docs/Web-Flow-1.6.0.md
index b98fad10a..4098b7e82 100644
--- a/docs/Web-Flow-1.6.0.md
+++ b/docs/Web-Flow-1.6.0.md
@@ -2,4 +2,16 @@
 
 This guide contains instructions for migration from PowerAuth WebFlow version `1.5.x` to version `1.6.0`.
 
-No migration steps nor database changes are required.
+## Database Changes
+
+For convenience you can use liquibase for your database migration.
+
+For manual changes use SQL scripts:
+
+- [PostgreSQL script](./sql/postgresql/migration_1.5.1_1.6.0.sql)
+- [Oracle script](./sql/oracle/migration_1.5.1_1.6.0.sql)
+
+### Fix DB Bug for Creating OTP without User ID
+
+The column `user_id` in table `ns_otp_storage` is nullable now.
+
diff --git a/docs/sql/oracle/migration_1.5.1_1.6.0.sql b/docs/sql/oracle/migration_1.5.1_1.6.0.sql
new file mode 100644
index 000000000..e69de29bb
diff --git a/docs/sql/postgresql/migration_1.5.1_1.6.0.sql b/docs/sql/postgresql/migration_1.5.1_1.6.0.sql
new file mode 100644
index 000000000..14f1fd51f
--- /dev/null
+++ b/docs/sql/postgresql/migration_1.5.1_1.6.0.sql
@@ -0,0 +1,3 @@
+-- Changeset powerauth-nextstep/1.6.x/20240116-correct-userid-nullable.xml::1::Zdenek Cerny
+-- Make user_id column in table ns_otp_storage nullable
+ALTER TABLE ns_otp_storage ALTER COLUMN  user_id DROP NOT NULL;
\ No newline at end of file