diff --git a/migrations/000.482.sql b/migrations/000.482.sql
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+++ b/migrations/000.482.sql
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+-- Add column to register when authorisation webhook was received
+ALTER TABLE adyen_sessions ADD COLUMN IF NOT EXISTS authorisation_webhook_timestamp TIMESTAMP WITH TIME ZONE;
+
+-- Make adyen_session_id unique
+CREATE UNIQUE INDEX ON adyen_sessions(adyen_session_id);