diff --git a/protocol-designer/src/pages/Designer/ProtocolSteps/StepForm/StepTools/ThermocyclerTools/ThermocyclerCycle.tsx b/protocol-designer/src/pages/Designer/ProtocolSteps/StepForm/StepTools/ThermocyclerTools/ThermocyclerCycle.tsx
index 1a26a708ed5..4200d9f8688 100644
--- a/protocol-designer/src/pages/Designer/ProtocolSteps/StepForm/StepTools/ThermocyclerTools/ThermocyclerCycle.tsx
+++ b/protocol-designer/src/pages/Designer/ProtocolSteps/StepForm/StepTools/ThermocyclerTools/ThermocyclerCycle.tsx
@@ -423,7 +423,7 @@ export function ThermocyclerCycle(props: ThermocyclerCycleProps): JSX.Element {
                       cycleStepId,
                       'temp',
                       maskToFloat(e.target.value),
-                      temperatureRangeFieldValue(4, 96)
+                      temperatureRangeFieldValue(4, 99)
                     )
                   }}
                   onBlur={() => {
diff --git a/protocol-designer/src/pages/Designer/ProtocolSteps/StepForm/StepTools/ThermocyclerTools/ThermocyclerStep.tsx b/protocol-designer/src/pages/Designer/ProtocolSteps/StepForm/StepTools/ThermocyclerTools/ThermocyclerStep.tsx
index 327e3676690..06126c6c136 100644
--- a/protocol-designer/src/pages/Designer/ProtocolSteps/StepForm/StepTools/ThermocyclerTools/ThermocyclerStep.tsx
+++ b/protocol-designer/src/pages/Designer/ProtocolSteps/StepForm/StepTools/ThermocyclerTools/ThermocyclerStep.tsx
@@ -285,7 +285,7 @@ export function ThermocyclerStep(props: ThermocyclerStepProps): JSX.Element {
             handleValueUpdate(
               'temp',
               maskToFloat(e.target.value),
-              temperatureRangeFieldValue(4, 96)
+              temperatureRangeFieldValue(4, 99)
             )
           }}
           onBlur={() => {