diff --git a/setup.cfg b/setup.cfg
index 5406716f7..5ca5831cf 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -37,6 +37,7 @@ python_requires = >=3.7
 
 [options.extras_require]
 docs =
+    olefile
     sphinx>=2.4
     sphinx-copybutton
     sphinx-issues>=3.0.1