diff --git a/internal/database/migrations/1_initial.sql b/internal/database/migrations/1_initial.sql
index 8b1a1af..d928f6d 100644
--- a/internal/database/migrations/1_initial.sql
+++ b/internal/database/migrations/1_initial.sql
@@ -2,7 +2,7 @@
 CREATE table user (
   id text PRIMARY KEY,
   first_name text NOT NULL,
-  email text NOT NULL
+  email text NOT NULL UNIQUE
 );
 
 -- +migrate Down