diff --git a/4-mvc-pattern-and-repositories.md b/3-mvc-pattern-and-repositories.md similarity index 100% rename from 4-mvc-pattern-and-repositories.md rename to 3-mvc-pattern-and-repositories.md diff --git a/5-rest-architecture.md b/4-rest-architecture.md similarity index 100% rename from 5-rest-architecture.md rename to 4-rest-architecture.md diff --git a/6-model-validation-and-designing-apis.md b/5-model-validation-and-designing-apis.md similarity index 100% rename from 6-model-validation-and-designing-apis.md rename to 5-model-validation-and-designing-apis.md diff --git a/7-databases-with-entity-framework.md b/6-databases-with-entity-framework.md similarity index 100% rename from 7-databases-with-entity-framework.md rename to 6-databases-with-entity-framework.md diff --git a/8-authentication-and-authorization.md b/7-authentication-and-authorization.md similarity index 100% rename from 8-authentication-and-authorization.md rename to 7-authentication-and-authorization.md diff --git a/9-testing.md b/8-testing.md similarity index 100% rename from 9-testing.md rename to 8-testing.md