diff --git a/setup.cfg b/setup.cfg
index 3ee5a5967f7..9abe0a83abe 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -8,3 +8,7 @@ tag_prefix = ''
 [flake8]
 ignore = E203, E266, E501, W503, F401, E741
 max-line-length = 88
+
+[tool:pytest]
+markers =
+    mpl_image_compare: compare generated plots with correct baseline version