diff --git a/pes_to_spec/test/offline_analysis.py b/pes_to_spec/test/offline_analysis.py
index 2c5effd9f17d58a842069c6b894188c603e5022e..62be08a5f19e0d654aeed5fa1c51312bee08cd9d 100755
--- a/pes_to_spec/test/offline_analysis.py
+++ b/pes_to_spec/test/offline_analysis.py
@@ -18,7 +18,7 @@ matplotlib.use('Agg')
 
 import matplotlib.pyplot as plt
 from matplotlib.gridspec import GridSpec
-from mpl_toolkits.axes_grid.inset_locator import InsetPosition
+from mpl_toolkits.axes_grid1.inset_locator import InsetPosition
 import seaborn as sns
 import scipy
 from scipy.signal import fftconvolve