diff --git a/env/sles15/aarch64/admin/stable/spack.yaml b/env/sles15/aarch64/admin/stable/spack.yaml
index 0c62ab4..36328c9 100644
--- a/env/sles15/aarch64/admin/stable/spack.yaml
+++ b/env/sles15/aarch64/admin/stable/spack.yaml
@@ -17,6 +17,15 @@ spack:
     default:
       roots:
         tcl: $spack/opt/spack/stable/modulefiles
+      tcl:
+        cray-mpich:
+          environment:
+            set:
+              SLURM_MPI_TYPE: 'pmix'
+        openmpi:
+          environment:
+            set:
+              SLURM_MPI_TYPE: 'pmix'
   specs:
   - matrix:
     - [$gcc_12.3_mpich]
diff --git a/env/sles15/aarch64/admin/testing/spack.yaml b/env/sles15/aarch64/admin/testing/spack.yaml
index d149a20..e8de833 100644
--- a/env/sles15/aarch64/admin/testing/spack.yaml
+++ b/env/sles15/aarch64/admin/testing/spack.yaml
@@ -15,5 +15,14 @@ spack:
     default:
       roots:
         tcl: $spack/opt/spack/testing/modulefiles
+      tcl:
+        cray-mpich:
+          environment:
+            set:
+              SLURM_MPI_TYPE: 'pmix'
+        openmpi:
+          environment:
+            set:
+              SLURM_MPI_TYPE: 'pmix'
   specs: []
   view: false
diff --git a/env/sles15/aarch64/admin/unstable/spack.yaml b/env/sles15/aarch64/admin/unstable/spack.yaml
index 15c36fd..f92c156 100644
--- a/env/sles15/aarch64/admin/unstable/spack.yaml
+++ b/env/sles15/aarch64/admin/unstable/spack.yaml
@@ -31,6 +31,15 @@ spack:
     default:
       roots:
         tcl: $spack/opt/spack/unstable/modulefiles
+      tcl:
+        cray-mpich:
+          environment:
+            set:
+              SLURM_MPI_TYPE: 'pmix'
+        openmpi:
+          environment:
+            set:
+              SLURM_MPI_TYPE: 'pmix'
   specs:
   - matrix:
     - [$gcc_7.5.0]
diff --git a/env/sles15/x86_64/admin/stable/spack.yaml b/env/sles15/x86_64/admin/stable/spack.yaml
index 37893d4..d1dd0d3 100644
--- a/env/sles15/x86_64/admin/stable/spack.yaml
+++ b/env/sles15/x86_64/admin/stable/spack.yaml
@@ -25,6 +25,15 @@ spack:
     default:
       roots:
         tcl: $spack/opt/spack/stable/modulefiles
+      tcl:
+        cray-mpich:
+          environment:
+            set:
+              SLURM_MPI_TYPE: 'pmix'
+        openmpi:
+          environment:
+            set:
+              SLURM_MPI_TYPE: 'pmix'
   specs:
   - matrix:
     - [$compilers]
diff --git a/env/sles15/x86_64/admin/testing/spack.yaml b/env/sles15/x86_64/admin/testing/spack.yaml
index d149a20..e8de833 100644
--- a/env/sles15/x86_64/admin/testing/spack.yaml
+++ b/env/sles15/x86_64/admin/testing/spack.yaml
@@ -15,5 +15,14 @@ spack:
     default:
       roots:
         tcl: $spack/opt/spack/testing/modulefiles
+      tcl:
+        cray-mpich:
+          environment:
+            set:
+              SLURM_MPI_TYPE: 'pmix'
+        openmpi:
+          environment:
+            set:
+              SLURM_MPI_TYPE: 'pmix'
   specs: []
   view: false
diff --git a/env/sles15/x86_64/admin/unstable/spack.yaml b/env/sles15/x86_64/admin/unstable/spack.yaml
index 990d1a4..00106cf 100644
--- a/env/sles15/x86_64/admin/unstable/spack.yaml
+++ b/env/sles15/x86_64/admin/unstable/spack.yaml
@@ -34,6 +34,15 @@ spack:
     default:
       roots:
         tcl: $spack/opt/spack/unstable/modulefiles
+      tcl:
+        cray-mpich:
+          environment:
+            set:
+              SLURM_MPI_TYPE: 'pmix'
+        openmpi:
+          environment:
+            set:
+              SLURM_MPI_TYPE: 'pmix'
   specs:
   - matrix:
     - [$gcc_7.5.0]