diff --git a/tcp_tests/tests/system/conftest.py b/tcp_tests/tests/system/conftest.py
index 0627ede..2ea36cf 100644
--- a/tcp_tests/tests/system/conftest.py
+++ b/tcp_tests/tests/system/conftest.py
@@ -80,3 +80,11 @@
     # tempest
     'tempest_actions'
 ])
+
+
+def pytest_addoption(parser):
+    parser.addoption("--dont-switch-to-proposed",
+                     action="store_true",
+                     help="Skips switching Jenkins on cluster-under-test to "
+                          "the proposed branch before the applying "
+                          "the MCP updates")