diff --git a/spectral_cube/utils.py b/spectral_cube/utils.py
index 8b5009955..1ec6c9823 100644
--- a/spectral_cube/utils.py
+++ b/spectral_cube/utils.py
@@ -1,4 +1,5 @@
 import warnings
+import inspect
 
 from functools import wraps