diff --git a/src/seismic_hazard_forecasting.py b/src/seismic_hazard_forecasting.py
index dc7299f..dd6d5ea 100644
--- a/src/seismic_hazard_forecasting.py
+++ b/src/seismic_hazard_forecasting.py
@@ -5,7 +5,7 @@ from scipy.optimize import root_scalar
 from timeit import default_timer as timer
 import logging
 logger = logging.getLogger(__name__)
-
+import mpmath
 from openquake.hazardlib.geo import Point #This class represents a geographical point in terms of longitude, latitude, and depth (with respect to the Earth surface).
 from openquake.hazardlib.geo.surface.planar import PlanarSurface
 from openquake.hazardlib.source.characteristic import CharacteristicFaultSource