diff --git a/configs/sites/tier1/narwhal/compilers.yaml b/configs/sites/tier1/narwhal/compilers.yaml
index 2ef73aab1..fb4e273af 100644
--- a/configs/sites/tier1/narwhal/compilers.yaml
+++ b/configs/sites/tier1/narwhal/compilers.yaml
@@ -11,13 +11,13 @@ compilers::
       modules:
       - PrgEnv-intel/8.4.0
       - intel-classic/2023.2.0
-      - cray-libsci/23.05.1.4
+      - cray-libsci/22.11.1.2
       - libfabric/1.12.1.2.2.1
       environment:
         prepend_path:
           PATH: '/opt/cray/pe/gcc/10.3.0/snos/bin'
           CPATH: '/opt/cray/pe/gcc/10.3.0/snos/include'
-          LD_LIBRARY_PATH: '/opt/cray/libfabric/1.12.1.2.2.1/lib64:/opt/cray/pe/libsci/23.05.1.4/INTEL/2022.2/x86_64/lib:/opt/cray/pe/gcc/10.3.0/snos/lib:/opt/cray/pe/gcc/10.3.0/snos/lib64'
+          LD_LIBRARY_PATH: '/opt/cray/libfabric/1.12.1.2.2.1/lib64:/opt/cray/pe/libsci/22.11.1.2/INTEL/19.0/x86_64/lib:/opt/cray/pe/gcc/10.3.0/snos/lib:/opt/cray/pe/gcc/10.3.0/snos/lib64'
         set:
           CRAYPE_LINK_TYPE: 'dynamic'
       extra_rpaths: []
@@ -33,13 +33,13 @@ compilers::
       modules:
       - PrgEnv-intel/8.4.0
       - intel/2024.2
-      - cray-libsci/23.05.1.4
+      - cray-libsci/22.11.1.2
       - libfabric/1.12.1.2.2.1
       environment:
         prepend_path:
           PATH: '/opt/cray/pe/gcc/10.3.0/snos/bin'
           CPATH: '/opt/cray/pe/gcc/10.3.0/snos/include'
-          LD_LIBRARY_PATH: '/opt/cray/libfabric/1.12.1.2.2.1/lib64:/opt/cray/pe/libsci/23.05.1.4/INTEL/2022.2/x86_64/lib:/opt/cray/pe/gcc/10.3.0/snos/lib:/opt/cray/pe/gcc/10.3.0/snos/lib64'
+          LD_LIBRARY_PATH: '/opt/cray/libfabric/1.12.1.2.2.1/lib64:/opt/cray/pe/libsci/22.11.1.2/INTEL/19.0/x86_64/lib:/opt/cray/pe/gcc/10.3.0/snos/lib:/opt/cray/pe/gcc/10.3.0/snos/lib64'
         append_path:
           CPATH: '/opt/intel/oneapi_2024.2.0.634/compiler/2024.2/opt/compiler/include/intel64'
         set:
@@ -63,11 +63,11 @@ compilers::
       modules:
       - PrgEnv-gnu/8.4.0
       - gcc/10.3.0
-      - cray-libsci/23.05.1.4
+      - cray-libsci/22.11.1.2
       - libfabric/1.12.1.2.2.1
       environment:
         prepend_path:
-          LD_LIBRARY_PATH: '/opt/cray/libfabric/1.12.1.2.2.1/lib64:/opt/cray/pe/libsci/23.05.1.4/GNU/10.3/x86_64/lib'
+          LD_LIBRARY_PATH: '/opt/cray/libfabric/1.12.1.2.2.1/lib64:/opt/cray/pe/libsci/22.11.1.2/GNU/9.1/x86_64/lib'
         set:
           CRAYPE_LINK_TYPE: 'dynamic'
       extra_rpaths: []