diff --git a/tests/functional/adapter/incremental/test_incremental_microbatch.py b/tests/functional/adapter/incremental/test_incremental_microbatch.py
index d04316d5..1bd196bf 100644
--- a/tests/functional/adapter/incremental/test_incremental_microbatch.py
+++ b/tests/functional/adapter/incremental/test_incremental_microbatch.py
@@ -6,7 +6,7 @@
 
 # No requirement for a unique_id for redshift microbatch!
 _microbatch_model_no_unique_id_sql = """
-{{ config(materialized='incremental', incremental_strategy='microbatch', event_time='event_time', batch_size='day') }}
+{{ config(materialized='incremental', incremental_strategy='microbatch', event_time='event_time', batch_size='day', begin=modules.datetime.datetime(2020, 1, 1, 0, 0, 0)) }}
 select * from {{ ref('input_model') }}
 """