diff --git a/alchemiscale_fah/compute/index.py b/alchemiscale_fah/compute/index.py
index b6ddc12..8b7dccf 100644
--- a/alchemiscale_fah/compute/index.py
+++ b/alchemiscale_fah/compute/index.py
@@ -15,7 +15,7 @@
 from gufe.protocols.protocoldag import ProtocolDAG
 from gufe.protocols.protocolunit import ProtocolUnitResult
 from alchemiscale.models import ScopedKey
-from alchemiscale.keyedchain import KeyedChain
+from gufe.tokenization import KeyedChain
 
 from .models import FahProject, FahRun, FahClone
 
diff --git a/alchemiscale_fah/compute/service.py b/alchemiscale_fah/compute/service.py
index 0a87ae0..f3ba3da 100644
--- a/alchemiscale_fah/compute/service.py
+++ b/alchemiscale_fah/compute/service.py
@@ -35,7 +35,7 @@
     InterruptableSleep,
     SleepInterrupted,
 )
-from alchemiscale.keyedchain import KeyedChain
+from gufe.tokenization import KeyedChain
 
 from .models import FahProject
 from .settings import FahAsynchronousComputeServiceSettings
diff --git a/devtools/configs/fah-asynchronous-compute-settings.yaml b/devtools/configs/fah-asynchronous-compute-settings.yaml
index 4789390..3cb9306 100644
--- a/devtools/configs/fah-asynchronous-compute-settings.yaml
+++ b/devtools/configs/fah-asynchronous-compute-settings.yaml
@@ -120,6 +120,9 @@ init:
   # Frequency in seconds between polls of FAH WS API for completed jobs.
   fah_poll_interval: 60
 
+  # List of supported core IDs in hex (base 16) format.  E.g. 0xa8.
+  fah_core_ids_supported: []
+
 # options for service execution
 start: