diff --git a/migrations/2025-07-13-155008_unique_guild_members/down.sql b/migrations/2025-07-13-155008_unique_guild_members/down.sql
new file mode 100644
index 0000000..013105c
--- /dev/null
+++ b/migrations/2025-07-13-155008_unique_guild_members/down.sql
@@ -0,0 +1,2 @@
+-- This file should undo anything in `up.sql`
+ALTER TABLE guild_members DROP CONSTRAINT guild_members_user_uuid_guild_uuid_key;
diff --git a/migrations/2025-07-13-155008_unique_guild_members/up.sql b/migrations/2025-07-13-155008_unique_guild_members/up.sql
new file mode 100644
index 0000000..d139337
--- /dev/null
+++ b/migrations/2025-07-13-155008_unique_guild_members/up.sql
@@ -0,0 +1,2 @@
+-- Your SQL goes here
+ALTER TABLE guild_members ADD UNIQUE (user_uuid, guild_uuid)
\ No newline at end of file