diff --git a/src/seismic_hazard_forecasting.py b/src/seismic_hazard_forecasting.py
index a578a0e..75b1b45 100644
--- a/src/seismic_hazard_forecasting.py
+++ b/src/seismic_hazard_forecasting.py
@@ -3,6 +3,7 @@ from eqdist.rate import datenum_to_datetime
 import Rbeast as rb;
 from scipy.stats import bootstrap
 from matplotlib.dates import DateFormatter, AutoDateLocator
+import numpy as np
 
 def plot_results(act_rate, bin_edges, bin_edges_dt, rt, boundaries,
                   bin_dur, unit, multiplicator,