diff --git a/roles/batcave/tasks/main.yml b/roles/batcave/tasks/main.yml
index 67a8caae36..66ba124b01 100644
--- a/roles/batcave/tasks/main.yml
+++ b/roles/batcave/tasks/main.yml
@@ -34,6 +34,7 @@
   - fpaste                    # general useful util
   - lftp                      # needed to easily pull in builds from koji for internal repos
   - git-email                 # needed to send patches for review to the mailing list
+  - python-dns                # needed to have ansible remove ip-based known_host entries
   tags:
   - batcave
   - config