diff --git a/config/versions.json b/config/versions.json
index 8f710a9f..ed47a902 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": "2025.03.002"
+    "spack-packages": "dev-2025.04.004"
 }
diff --git a/spack.yaml b/spack.yaml
index b790420c..d4400685 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -13,8 +13,7 @@ spack:
   packages:
     mom5:
       require:
-        - '@git.dev-2025.03.001=access-esm1.6'
-        - '+access-gtracers'
+        - '@git.dev-2025.04.001=access-esm1.6'
     cice4:
       require:
         - '@git.access-esm1.6-2025.04.000=access-esm1.5'
@@ -69,7 +68,7 @@ spack:
           access-esm1p6: '{name}/dev_2025.04.000'
           cice4: '{name}/access-esm1.6-2025.04.000-{hash:7}'
           um7: '{name}/access-esm1.6-2025.04.000-{hash:7}'
-          mom5: '{name}/dev-2025.03.001-{hash:7}'
+          mom5: '{name}/dev-2025.04.001-{hash:7}'
   config:
     install_tree:
       root: $spack/../restricted/ukmo/release