diff --git a/config/versions.json b/config/versions.json
index 6c0c900..1e564d9 100644
--- a/config/versions.json
+++ b/config/versions.json
@@ -1,5 +1,5 @@
 {
   "$schema": "https://raw.githubusercontent.com/ACCESS-NRI/schema/main/au.org.access-nri/model/deployment/config/versions/4-0-0.json",
   "spack": "1.1",
-  "access-spack-packages": "main"
+  "access-spack-packages": "api-v2"
 }
diff --git a/spack.yaml b/spack.yaml
index bd1a95d..51d43c5 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -6,7 +6,7 @@ spack:
   definitions:
   # _name and _version are reserved definitions that inform build-cd deployments, and have no effect otherwise
   - _name: [access-test]
-  - _version: [2025.09.000]
+  - _version: [2026.01.000]
   specs:
   - access-test
   packages: