diff --git a/spack.yaml b/spack.yaml
index ab00b837..afd2c48c 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -5,8 +5,8 @@
 # Instructions for editing this file are found in 
 # https://github.com/ACCESS-NRI/model-deployment-template/blob/main/spack.yaml
 spack:
-  specs:
-    - access-om3@git.2025.08.001
+  specs:    
+    - access-mom6@2025.07.000 fflags="-march=sapphirerapids -mtune=sapphirerapids -unroll" cflags="-march=sapphirerapids -mtune=sapphirerapids -unroll" cxxflags="-march=sapphirerapids -mtune=sapphirerapids -unroll" ~access3
   packages:
     # Main Dependencies
     access3: