1 files changed, 6 insertions, 1 deletions
diff --git a/tox.ini b/tox.ini
index 151b5530..677df7e4 100644
--- a/tox.ini
+++ b/tox.ini
@@ -7,7 +7,6 @@ deps =
     coverage
     iso8601
     pretend
-    pyasn1
     pytest
     ./vectors
 commands =
@@ -77,3 +76,9 @@ application-import-names = cryptography,cryptography_vectors,tests
 
 [doc8]
 extensions = rst
+
+[pytest]
+addopts = -r s
+markers =
+    requires_backend_interface: this test requires a specific backend interface
+    supported: parametrized test requiring only_if and skip_message