diff --git a/ansible/group_vars/nimbus.prater.yml b/ansible/group_vars/nimbus.prater.yml
index f9cac78..2e4884b 100644
--- a/ansible/group_vars/nimbus.prater.yml
+++ b/ansible/group_vars/nimbus.prater.yml
@@ -70,7 +70,6 @@ beacon_node_repo_branch: '{{ node_name_to_branch_map.get(node.branch, node.branc
 # We map short names to branches to avoid too long service names.
 node_name_to_branch_map:
   libp2p:  'nim-libp2p-auto-bump-unstable'
-  chronos: 'nim-chronos-auto-bump-unstable'
 # Ports
 beacon_node_discovery_port: '{{ 9000 + idx }}'
 beacon_node_listening_port: '{{ 9000 + idx }}'
@@ -244,6 +243,5 @@ nodes_layout:
   'linux-06.ih-eu-mda1.nimbus.prater':
     - { branch: 'stable',   start: 20404, end: 29617, build_freq: '*-*-* 11:00:00' } # 9213 validators
     - { branch: 'testing',  start: 29617, end: 37617, build_freq: '*-*-* 15:00:00', validator_client: true, payload_builder: true, open_libp2p_ports: false } # 8000 validators
-    - { branch: 'unstable', start: 37617, end: 43617, build_freq: '*-*-* 13:00:00', payload_builder: true, erigon: true } # 6000 validators
-    - { branch: 'libp2p',   start: 43617, end: 48617, build_freq: '*-*-* 17:00:00', validator_client: true } # 5000 validators
-    - { branch: 'chronos',  start: 48617, end: 49617, build_freq: '*-*-* 17:00:00', validator_client: true } # 1000 validators
+    - { branch: 'unstable', start: 37617, end: 43617, build_freq: '*-*-* 13:00:00', payload_builder: true  } # 6000 validators
+    - { branch: 'libp2p',   start: 43617, end: 49617, build_freq: '*-*-* 17:00:00', validator_client: true } # 6000 validators