diff --git a/dal/schema/000023_init.down.sql b/dal/schema/000023_init.down.sql
new file mode 100644
index 0000000..e69de29
diff --git a/dal/schema/000023_init.up.sql b/dal/schema/000023_init.up.sql
new file mode 100644
index 0000000..94c6a96
--- /dev/null
+++ b/dal/schema/000023_init.up.sql
@@ -0,0 +1,14 @@
+BEGIN;
+ALTER TABLE gigachatAudience RENAME COLUMN Sex TO Sex_old;
+ALTER TABLE gigachatAudience ADD COLUMN Sex INTEGER;
+UPDATE gigachatAudience
+SET Sex = CASE
+    WHEN Sex_old = FALSE THEN 0
+    WHEN Sex_old = TRUE  THEN 1
+    ELSE 2
+END;
+ALTER TABLE gigachatAudience DROP COLUMN Sex_old;
+ALTER TABLE gigachatAudience ALTER COLUMN Sex SET NOT NULL;
+ALTER TABLE gigachatAudience
+    ADD CONSTRAINT check_sex_valid_values CHECK (Sex IN (0, 1, 2));
+COMMIT;
diff --git a/model/gigachat.go b/model/gigachat.go
index 4b93f2a..908b23b 100644
--- a/model/gigachat.go
+++ b/model/gigachat.go
@@ -42,7 +42,7 @@ var EmptyResponseErrorGigaChat = errors.New("empty response from GigaChat try ag
 type GigaChatAudience struct {
 	ID        int64  `json:"id"`
 	QuizID    int64  `json:"quiz_id"`
-	Sex       bool   `json:"sex"` // false - female, true - male
+	Sex       int    `json:"sex"` // 0 - female, 1 - male, 2 - not sex
 	Age       string `json:"age"`
 	Deleted   bool   `json:"deleted"`
 	CreatedAt int64  `json:"created_at"`
diff --git a/sqlc.yaml b/sqlc.yaml
index faf4c77..d1fa689 100644
--- a/sqlc.yaml
+++ b/sqlc.yaml
@@ -46,6 +46,8 @@ packages:
       - "./dal/schema/000021_init.down.sql"
       - "./dal/schema/000022_init.up.sql"
       - "./dal/schema/000022_init.down.sql"
+      - "./dal/schema/000023_init.up.sql"
+      - "./dal/schema/000023_init.down.sql"
     engine: "postgresql"
     emit_json_tags: true
     emit_db_tags: true