diff --git a/config/versions.json b/config/versions.json
index 194eb11..2a3f1a3 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": "2025.03.006"
+    "spack-packages": "8169c0ae9beb2fa67c62f48f9a6cbb88923b627d"
 }
diff --git a/spack.yaml b/spack.yaml
index 7fd3781..4c23cfb 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -19,6 +19,9 @@ spack:
     um7:
       require:
         - '@git.2024.10.17=access-esm1.5'
+        - 'fflags="-debug all -g3 -grecord-gcc-switches"'
+        - 'cflags="-debug all -g3 -grecord-gcc-switches"'
+        - 'cxxflags="-debug all -g3 -grecord-gcc-switches"'
     # Lower-level ACCESS-NRI dependencies
     gcom4:
       require: