diff --git a/internal/postgres/tag.go b/internal/postgres/tag.go
index e22426b..0270085 100644
--- a/internal/postgres/tag.go
+++ b/internal/postgres/tag.go
@@ -188,7 +188,10 @@ func CreateTagAlias(ctx context.Context, db *gorm.DB, tagAliasName models.Anthro
 		return &otterError.EntityValidationFailed{Reason: otterError.AnthroveTagIDEmpty}
 	}
 
-	result := db.WithContext(ctx).Create(&models.TagAlias{
+	result := db.WithContext(ctx).Clauses(clause.OnConflict{
+		Columns:   []clause.Column{{Name: "name"}},
+		DoNothing: true,
+	}).Create(&models.TagAlias{
 		Name:  string(tagAliasName),
 		TagID: string(tagID),
 	})