diff --git a/pyzebra/app/app.py b/pyzebra/app/app.py
index c9ea8f7..60784f5 100644
--- a/pyzebra/app/app.py
+++ b/pyzebra/app/app.py
@@ -3,8 +3,8 @@ import argparse
 from bokeh.io import curdoc
 from bokeh.models import Tabs
 
-import panel_data_viewer
 import panel_anatric
+import panel_data_viewer
 
 parser = argparse.ArgumentParser(
     prog="pyzebra", formatter_class=argparse.ArgumentDefaultsHelpFormatter
diff --git a/pyzebra/xtal.py b/pyzebra/xtal.py
index f54aa76..fa2c3b0 100644
--- a/pyzebra/xtal.py
+++ b/pyzebra/xtal.py
@@ -1,7 +1,9 @@
-import numpy as np
 import math
-from scipy.optimize import curve_fit
+
+import numpy as np
 from matplotlib import pyplot as plt
+from scipy.optimize import curve_fit
+
 import pyzebra