diff --git a/ansible/inventories/devnet-9/group_vars/all/images.yaml b/ansible/inventories/devnet-9/group_vars/all/images.yaml
index a15d313..28f69e6 100644
--- a/ansible/inventories/devnet-9/group_vars/all/images.yaml
+++ b/ansible/inventories/devnet-9/group_vars/all/images.yaml
@@ -7,7 +7,7 @@ default_ethereum_client_images:
   prysm: registry-1.docker.io/ethpandaops/prysm-beacon-chain:develop
   prysm_validator: registry-1.docker.io/ethpandaops/prysm-validator:develop
   teku: registry-1.docker.io/ethpandaops/teku:master
-  grandine: registry-1.docker.io/ethpandaops/grandine:glamsterdam-devnet-8
+  grandine: registry-1.docker.io/ethpandaops/grandine:develop
   ### Execution layer clients
   besu: registry-1.docker.io/ethpandaops/besu:main
   geth: registry-1.docker.io/ethpandaops/geth:master
diff --git a/ansible/inventories/devnet-9/group_vars/teku.yaml b/ansible/inventories/devnet-9/group_vars/teku.yaml
index 24a3e2b..bb9a974 100644
--- a/ansible/inventories/devnet-9/group_vars/teku.yaml
+++ b/ansible/inventories/devnet-9/group_vars/teku.yaml
@@ -29,7 +29,7 @@ ethereum_node_cl: teku
 teku_container_name: beacon
 teku_container_image: "{{ default_ethereum_client_images.teku }}"
 teku_container_env:
-  JAVA_OPTS: "-Xmx12g"
+  JAVA_OPTS: "-Xmx20g" # 12g pinned the heap on a ~4M-entry registry; see PR body
   VIRTUAL_HOST: "{{ ethereum_node_beacon_hostname }}"
   VIRTUAL_PORT: "{{ ethereum_node_cl_ports_http_beacon | string }}"
   LETSENCRYPT_HOST: "{{ ethereum_node_beacon_hostname }}"