diff --git a/examples/heatmap_human_brain.py b/examples/heatmap_human_brain.py
index 5b8fe90..0385393 100644
--- a/examples/heatmap_human_brain.py
+++ b/examples/heatmap_human_brain.py
@@ -4,6 +4,7 @@
 
 N.B. the physical scales are very different to e.g. the small animal atlases.
 """
+
 import brainglobe_heatmap as bgh
 
 values = dict(  # scalar values for each region