diff --git a/lib/spack/spack/test/pytest.ini b/lib/spack/spack/test/pytest.ini
index ccad5f86ccc..59839c0005c 100644
--- a/lib/spack/spack/test/pytest.ini
+++ b/lib/spack/spack/test/pytest.ini
@@ -7,3 +7,4 @@ markers =
   db: tests that require creating a DB
   network: tests that require access to the network
   maybeslow: tests that may be slow (e.g. access a lot the filesystem, etc.)
+  regression: tests that fix a reported bug