diff --git a/setup.cfg b/setup.cfg
index ec3b4afd2c..0b2e743529 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -85,6 +85,7 @@ markers =
     primer_external_batch_one: Checks for crashes and errors when running pylint on external libs (batch one)
     primer_external_batch_two: Checks for crashes and errors when running pylint on external libs (batch two)
     benchmark: Baseline of pylint performance, if this regress something serious happened
+    timeout: Marks from pytest-timeout.
 
 [isort]
 profile = black