diff --git a/avatar/cases/security_test.py b/avatar/cases/security_test.py
index 5749ed8..f6e8758 100644
--- a/avatar/cases/security_test.py
+++ b/avatar/cases/security_test.py
@@ -16,6 +16,7 @@
 import avatar
 import itertools
 import logging
+import secrets
 
 from avatar import BumblePandoraDevice
 from avatar import PandoraDevice
@@ -103,6 +104,7 @@ async def setup_class(self) -> None:
                 device.config.setdefault('address_resolution_offload', True)
                 device.config.setdefault('classic_enabled', True)
                 device.config.setdefault('classic_ssp_enabled', True)
+                device.config.setdefault('irk', secrets.token_hex(16))
                 device.config.setdefault(
                     'server',
                     {