diff --git a/hasura/migrations/1614710766234_alter_table_public_player_add_check_constraint_username_is_valid/down.sql b/hasura/migrations/1614710766234_alter_table_public_player_add_check_constraint_username_is_valid/down.sql
new file mode 100644
index 00000000..34c343d7
--- /dev/null
+++ b/hasura/migrations/1614710766234_alter_table_public_player_add_check_constraint_username_is_valid/down.sql
@@ -0,0 +1 @@
+alter table "public"."player" drop constraint "username_is_valid";
diff --git a/hasura/migrations/1614710766234_alter_table_public_player_add_check_constraint_username_is_valid/up.sql b/hasura/migrations/1614710766234_alter_table_public_player_add_check_constraint_username_is_valid/up.sql
new file mode 100644
index 00000000..2e1508ec
--- /dev/null
+++ b/hasura/migrations/1614710766234_alter_table_public_player_add_check_constraint_username_is_valid/up.sql
@@ -0,0 +1 @@
+alter table "public"."player" add constraint "username_is_valid" check (username ~* '^[a-z0-9-](_(?!(\.|_))|\.(?!(_|\.))|[a-z0-9-]){0,40}[a-z0-9-]$');