diff --git a/internal/app/config/migration.go b/internal/app/config/migration.go
index e76c14f..bfbae35 100644
--- a/internal/app/config/migration.go
+++ b/internal/app/config/migration.go
@@ -14,6 +14,16 @@ type RetryConfig struct {
 	MaxJitterMs int `yaml:"max_jitter_ms"`
 }
 
+type ToStorageColumnConfig struct {
+	Source string `yaml:"source"`
+	Target string `yaml:"target"`
+	Mode   string `yaml:"mode"`
+}
+
+type ToStorageConfig struct {
+	Columns []ToStorageColumnConfig `yaml:"columns"`
+}
+
 type JobConfig struct {
 	MaxExtractors       int         `yaml:"max_extractors"`
 	MaxLoaders          int         `yaml:"max_loaders"`
@@ -26,6 +36,7 @@ type JobConfig struct {
 	MaxChunkErrors      int         `yaml:"max_chunk_errors"`
 	Retry               RetryConfig `yaml:"retry"`
 	RowsPerPartition    int64
+	ToStorage           ToStorageConfig `yaml:"to_storage"`
 }
 
 type TableInfo struct {