diff --git a/dal/schema/000021_init.down.sql b/dal/schema/000021_init.down.sql
new file mode 100644
index 0000000..24bee9c
--- /dev/null
+++ b/dal/schema/000021_init.down.sql
@@ -0,0 +1 @@
+ALTER TABLE answer DROP COLUMN IF EXISTS version;
\ No newline at end of file
diff --git a/dal/schema/000021_init.up.sql b/dal/schema/000021_init.up.sql
new file mode 100644
index 0000000..aa9cfa1
--- /dev/null
+++ b/dal/schema/000021_init.up.sql
@@ -0,0 +1 @@
+ALTER TABLE answer ADD COLUMN version integer NOT NULL default 0;
\ No newline at end of file
diff --git a/model/model.go b/model/model.go
index 5db3a91..0bfff36 100644
--- a/model/model.go
+++ b/model/model.go
@@ -131,6 +131,7 @@ type Answer struct {
 	OS         string
 	Start      bool
 	Utm        UTMSavingMap
+	Version    int
 }
 
 type ResultContent struct {