diff --git a/modelicares/util.py b/modelicares/util.py
index 9e4726e7..57611feb 100644
--- a/modelicares/util.py
+++ b/modelicares/util.py
@@ -126,7 +126,7 @@
 from math import floor
 from matplotlib import rcParams
 from matplotlib._pylab_helpers import Gcf
-from matplotlib.cbook import iterable
+from numpy import iterable
 from matplotlib.lines import Line2D
 from natu.util import flatten_list
 from six import string_types