diff --git a/spack.yaml b/spack.yaml
index e787e4f..0d6960c 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -4,14 +4,14 @@
 # configuration settings.
 spack:
   specs:
-    - access-am3@git.2026.02.000
+    - access-am3@git.2026.03.000
   packages:
     # Direct dependencies
     um:
       require:
         - '@13.1'
         - model="vn13p1-am"
-        - jules_ref="2026.01.0"
+        - jules_ref="f4b0cfa7b3480df94797a9633555f550e0c35da0"
         - um_ref="2026.01.0"
 
     # Indirect dependencies