diff --git a/config/versions.json b/config/versions.json
index 112f4e6..9df961d 100644
--- a/config/versions.json
+++ b/config/versions.json
@@ -1,5 +1,5 @@
 {
     "$schema": "https://github.com/ACCESS-NRI/schema/blob/main/au.org.access-nri/model/deployment/config/versions/3-0-0.json",
     "spack": "0.22",
-    "spack-packages": "2024.11.2"
+    "spack-packages": "2024.12.1"
 }
diff --git a/spack.yaml b/spack.yaml
index 2e26644..0452f64 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -5,7 +5,7 @@
 spack:
   # add package specs to the `specs` list
   specs:
-    - access-om2@git.2024.11.0
+    - access-om2@git.2024.12.0
   packages:
     cice5:
       require:
@@ -36,14 +36,14 @@ spack:
     access-fms:
       require:
       # FIXME: This would need to be changed to a stable version before release
-        - '@development'
+        - '@git.dev_2024.12.0'
     access-generic-tracers:
       require:
       # FIXME: This would need to be changed to a stable version before release.
-        - '@git.dev_2024.11.0'
+        - '@git.dev_2024.12.0'
     access-mocsy:
       require:
-        - '@mom5'
+        - '@git.2017.12.0'
     # Specifications that apply to all packages
     all:
       require:
@@ -62,7 +62,7 @@ spack:
           - libaccessom2
           - oasis3-mct
         projections:
-          access-om2: '{name}/2024.11.0'
+          access-om2: '{name}/2024.12.0'
           cice5: '{name}/2023.10.19-{hash:7}'
           mom5: '{name}/dev_2024.08.14-{hash:7}'
           libaccessom2: '{name}/2023.10.26-{hash:7}'