diff --git a/backend/migrations/009_sleep_log.sql b/backend/migrations/009_sleep_log.sql
index 3c77247..9f4edeb 100644
--- a/backend/migrations/009_sleep_log.sql
+++ b/backend/migrations/009_sleep_log.sql
@@ -4,7 +4,7 @@
 
 CREATE TABLE IF NOT EXISTS sleep_log (
     id SERIAL PRIMARY KEY,
-    profile_id VARCHAR(36) NOT NULL REFERENCES profiles(id) ON DELETE CASCADE,
+    profile_id UUID NOT NULL REFERENCES profiles(id) ON DELETE CASCADE,
     date DATE NOT NULL,
     bedtime TIME,
     wake_time TIME,