diff --git a/doc/source/conf.py b/doc/source/conf.py
index b9d27bb..f195b48 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -57,14 +57,7 @@
 
 # Turn on sphinx.ext.autosummary
 autosummary_generate = True
-autodoc_mock_imports = [
-    "pcraster",
-    "osgeo",
-    "skgstat",
-    "pykrige",
-    "numpy",
-    "pandas",
-]
+autodoc_mock_imports = ["pcraster", "osgeo", "skgstat", "pykrige", "numpy", "pandas", "humanize"]
 # Add __init__ doc (ie. params) to class summaries
 autoclass_content = "both"
 # Remove 'view source code' from top of page (for html, not python)