diff --git a/tests/test_41_response.py b/tests/test_41_response.py
index ac4eb68..70cbb1a 100644
--- a/tests/test_41_response.py
+++ b/tests/test_41_response.py
@@ -12,7 +12,8 @@ from saml2.sigver import SignatureError
 
 FALSE_ASSERT_SIGNED = "saml_false_signed.xml"
 
-TIMESLACK = 2592000  # Roughly 3 month
+TIMESLACK = 10000000  # Roughly +- 6 month
+
 
 def _eq(l1, l2):
     return set(l1) == set(l2)