diff --git a/config/versions.json b/config/versions.json
index 50446e6..3794687 100644
--- a/config/versions.json
+++ b/config/versions.json
@@ -1,7 +1,7 @@
 {
   "$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": "2026.03.005",
+  "access-spack-packages": "675c180fdf6a4cb763fc734daf162fcf19cb7526",
   "custom-scopes": [
     "ukmo-restricted-scope"
   ]