diff --git a/data/model/author.go b/internal/data/model/author.go
similarity index 100%
rename from data/model/author.go
rename to internal/data/model/author.go
diff --git a/data/model/book.go b/internal/data/model/book.go
similarity index 100%
rename from data/model/book.go
rename to internal/data/model/book.go
diff --git a/data/repository/author_repository.go b/internal/data/repository/author_repository.go
similarity index 83%
rename from data/repository/author_repository.go
rename to internal/data/repository/author_repository.go
index a0e6ebf..430cd32 100644
--- a/data/repository/author_repository.go
+++ b/internal/data/repository/author_repository.go
@@ -1,7 +1,7 @@
 package repository
 
 import (
-	"github.com/Neur0toxine/demo-web-service-go/data/model"
+	"github.com/Neur0toxine/demo-web-service-go/internal/data/model"
 	"github.com/brianvoe/gofakeit/v6"
 )
 
diff --git a/data/repository/book_repository.go b/internal/data/repository/book_repository.go
similarity index 84%
rename from data/repository/book_repository.go
rename to internal/data/repository/book_repository.go
index 8dd73b4..7ce53cf 100644
--- a/data/repository/book_repository.go
+++ b/internal/data/repository/book_repository.go
@@ -4,7 +4,7 @@ import (
 	"math/rand"
 	"time"
 
-	"github.com/Neur0toxine/demo-web-service-go/data/model"
+	"github.com/Neur0toxine/demo-web-service-go/internal/data/model"
 	"github.com/brianvoe/gofakeit/v6"
 )
 
diff --git a/internal/handlers.go b/internal/handlers.go
index 682b8f1..5a53bca 100644
--- a/internal/handlers.go
+++ b/internal/handlers.go
@@ -3,7 +3,7 @@ package internal
 import (
 	"net/http"
 
-	"github.com/Neur0toxine/demo-web-service-go/data/repository"
+	"github.com/Neur0toxine/demo-web-service-go/internal/data/repository"
 	"github.com/gin-gonic/gin"
 )
 
diff --git a/internal/handlers_test.go b/internal/handlers_test.go
index a322658..46fa924 100644
--- a/internal/handlers_test.go
+++ b/internal/handlers_test.go
@@ -7,7 +7,7 @@ import (
 	"net/http/httptest"
 	"testing"
 
-	"github.com/Neur0toxine/demo-web-service-go/data/model"
+	"github.com/Neur0toxine/demo-web-service-go/internal/data/model"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 )