diff --git a/doc/source/whatsnew/v0.20.3.txt b/doc/source/whatsnew/v0.20.3.txt
index c730142450ea6..17195715d0f95 100644
--- a/doc/source/whatsnew/v0.20.3.txt
+++ b/doc/source/whatsnew/v0.20.3.txt
@@ -37,7 +37,7 @@ Performance Improvements
 Bug Fixes
 ~~~~~~~~~
 - Fixed issue with dataframe scatter plot for categorical data that reports incorrect column key not found when categorical data is used for plotting (:issue:`16199`)
-
+- Fixed a pytest marker failing downstream packages' tests suites (:issue:`16680`)
 
 
 
diff --git a/setup.cfg b/setup.cfg
index 8b32f0f62fe28..1f9bea6718a4d 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -22,8 +22,7 @@ split_penalty_after_opening_bracket = 1000000
 split_penalty_logical_operator = 30
 
 [tool:pytest]
-# TODO: Change all yield-based (nose-style) fixutures to pytest fixtures
-# Silencing the warning until then
 testpaths = pandas
 markers =
     single: mark a test as single cpu only
+    slow: mark a test as slow