diff --git a/recipes/icon/26.2/gh200/compilers.yaml b/recipes/icon/26.2/gh200/compilers.yaml
index 9573155..a5c3529 100644
--- a/recipes/icon/26.2/gh200/compilers.yaml
+++ b/recipes/icon/26.2/gh200/compilers.yaml
@@ -3,4 +3,4 @@ gcc:
 nvhpc:
   # version: "26.3"
   # - ML - downgrade try
-  version: "26.1"
+  version: "25.1"
diff --git a/recipes/icon/26.2/gh200/environments.yaml b/recipes/icon/26.2/gh200/environments.yaml
index daa457a..dac2f89 100644
--- a/recipes/icon/26.2/gh200/environments.yaml
+++ b/recipes/icon/26.2/gh200/environments.yaml
@@ -1,13 +1,13 @@
 icon:
   compiler: [gcc, nvhpc]
   network:
-    mpi: cray-mpich@9.1.0 +cuda %c,cxx,fortran=nvhpc ^libfabric@2 +gdrcopy %c=nvhpc
+    mpi: cray-mpich@8.1.30 +cuda %c,cxx,fortran=nvhpc ^libfabric@2 +gdrcopy %c=nvhpc
     specs: [ xpmem ]
   unify: when_possible
   specs:
     - python@3.13 %c,cxx=gcc ^libffi %c,cxx=gcc ^expat %c=gcc ^libmd %c=gcc ^gettext %c,cxx=gcc
     - python-venv
-    - cuda@13.1
+    - cuda@12.6
     - eccodes@2.36.4 +fortran jp2k=jasper %c,cxx,fortran=nvhpc
     - eccodes-cosmo-resources@2.36.0.3 ^eccodes %c,cxx,fortran=nvhpc
     - hdf5@1.14.6 +fortran+hl+szip+threadsafe %c,fortran=nvhpc