diff --git a/pioreactor/automations/temperature/thermostat.py b/pioreactor/automations/temperature/thermostat.py
index a95f35f6..39ec95b1 100644
--- a/pioreactor/automations/temperature/thermostat.py
+++ b/pioreactor/automations/temperature/thermostat.py
@@ -34,7 +34,7 @@ def __init__(self, target_temperature: float | str, **kwargs) -> None:
             job_name=self.job_name,
             target_name="temperature",
             output_limits=(-25, 25),  # avoid whiplashing
-            derivative_smoothing=0.50,
+            derivative_smoothing=0.90,
         )
 
     def execute(self) -> UpdatedHeaterDC: