diff --git a/internal/entity/deprecated.go b/internal/entity/deprecated.go
new file mode 100644
index 000000000..7fc7017af
--- /dev/null
+++ b/internal/entity/deprecated.go
@@ -0,0 +1,38 @@
+package entity
+
+// Deprecated represents a list of deprecated database tables;
+type Deprecated []string
+
+// Drop drops all deprecated tables.
+func (list Deprecated) Drop() {
+	for _, tableName := range list {
+		if err := UnscopedDb().DropTableIfExists(tableName).Error; err != nil {
+			log.Debugf("drop %s: %s", tableName, err)
+		}
+	}
+}
+
+// DeprecatedTables lists deprecated development database tables, so that they can be removed.
+var DeprecatedTables = Deprecated{
+	"subjects_dev1",
+	"subjects_dev2",
+	"subjects_dev3",
+	"subjects_dev4",
+	"subjects_dev5",
+	"subjects_dev6",
+	"subjects_dev7",
+	"markers_dev1",
+	"markers_dev2",
+	"markers_dev3",
+	"markers_dev4",
+	"markers_dev5",
+	"markers_dev6",
+	"markers_dev7",
+	"faces_dev1",
+	"faces_dev2",
+	"faces_dev3",
+	"faces_dev4",
+	"faces_dev5",
+	"faces_dev6",
+	"faces_dev7",
+}
diff --git a/internal/entity/entity.go b/internal/entity/entity.go
index 3607e51a1..6d4e14349 100644
--- a/internal/entity/entity.go
+++ b/internal/entity/entity.go
@@ -135,6 +135,7 @@ func CreateDefaultFixtures() {
 
 // MigrateDb creates all tables and inserts default entities as needed.
 func MigrateDb() {
+	DeprecatedTables.Drop()
 	Entities.Migrate()
 	Entities.WaitForMigration()
 
diff --git a/internal/entity/face.go b/internal/entity/face.go
index 7d35336f8..faf2559f3 100644
--- a/internal/entity/face.go
+++ b/internal/entity/face.go
@@ -38,7 +38,7 @@ var Faceless = []string{""}
 
 // TableName returns the entity database table name.
 func (Face) TableName() string {
-	return "faces_dev7"
+	return "faces_dev8"
 }
 
 // NewFace returns a new face.
diff --git a/internal/entity/marker.go b/internal/entity/marker.go
index b7f70b091..00d4a8d99 100644
--- a/internal/entity/marker.go
+++ b/internal/entity/marker.go
@@ -57,7 +57,7 @@ type Marker struct {
 
 // TableName returns the entity database table name.
 func (Marker) TableName() string {
-	return "markers_dev7"
+	return "markers_dev8"
 }
 
 // BeforeCreate creates a random UID if needed before inserting a new row to the database.
diff --git a/internal/entity/subject.go b/internal/entity/subject.go
index cf891721b..18c2bdac0 100644
--- a/internal/entity/subject.go
+++ b/internal/entity/subject.go
@@ -42,7 +42,7 @@ type Subject struct {
 
 // TableName returns the entity database table name.
 func (Subject) TableName() string {
-	return "subjects_dev7"
+	return "subjects_dev8"
 }
 
 // BeforeCreate creates a random UID if needed before inserting a new row to the database.