diff --git a/config-hlrs/packages.yaml b/config-hlrs/packages.yaml
index 6d0bfa1..3954541 100644
--- a/config-hlrs/packages.yaml
+++ b/config-hlrs/packages.yaml
@@ -5,6 +5,7 @@ packages:
       blas: [cray-libsci]
       lapack: [cray-libsci]
       scalapack: [cray-libsci]
+      fftw-api: [cray-fftw]
       pkgconfig: [pkg-config]
       zlib-api: [zlib-ng+compat]
   cray-mpich:
@@ -34,6 +35,68 @@ packages:
       modules:
       - cray-libsci/24.03.0
     buildable: false
+  fftw:
+    externals:
+    - spec: fftw@3.3.10.7
+      prefix: /opt/cray/pe/fftw/3.3.10.7/x86_64
+      modules:
+      - cray-fftw/3.3.10.7
+    buildable: false
+  hdf5:
+    externals:
+    - spec: hdf5@1.14.3.1%cce
+      prefix: /opt/cray/pe/hdf5/1.14.3.1/cray/18.0
+      modules:
+      - cray-hdf5/1.14.3.1
+    - spec: hdf5@1.14.3.1%gcc
+      prefix: /opt/cray/pe/hdf5/1.14.3.1/gnu/12.3
+      modules:
+      - cray-hdf5/1.14.3.1      
+    buildable: false
+  netcdf-c:
+    externals:
+    - spec: netcdf-c@4.9.0.13%cce
+      prefix: /opt/cray/pe/netcdf/4.9.0.13/crayclang/18.0
+      modules:
+      - cray-netcdf/4.9.0.13
+    - spec: netcdf-c@4.9.0.13%gcc
+      prefix: /opt/cray/pe/netcdf/4.9.0.13/gnu/12.3
+      modules:
+      - cray-netcdf/4.9.0.13
+    buildable: false
+  netcdf-cxx4:
+    externals:
+    - spec: netcdf-cxx4@4.9.0.13%cce
+      prefix: /opt/cray/pe/netcdf/4.9.0.13/crayclang/18.0
+      modules:
+      - cray-netcdf/4.9.0.13
+    - spec: netcdf-cxx4@4.9.0.13%gcc
+      prefix: /opt/cray/pe/netcdf/4.9.0.13/gnu/12.3
+      modules:
+      - cray-netcdf/4.9.0.13  
+    buildable: false
+  netcdf-fortran:
+    externals:
+    - spec: netcdf-fortran@4.9.0.13%cce
+      prefix: /opt/cray/pe/netcdf/4.9.0.13/crayclang/18.0
+      modules:
+      - cray-netcdf/4.9.0.13
+    - spec: netcdf-fortran@4.9.0.13%gcc
+      prefix: /opt/cray/pe/netcdf/4.9.0.13/gnu/12.3
+      modules:
+      - cray-netcdf/4.9.0.13
+    buildable: false
+  parallel-netcdf:
+    externals:
+    - spec: parallel-netcdf@1.12.3.13%cce
+      prefix: /opt/cray/pe/parallel-netcdf/1.12.3.13/crayclang/18.0
+      modules:
+      - cray-parallel-netcdf/1.12.3.13
+    - spec: parallel-netcdf@1.12.3.13%gcc
+      prefix: /opt/cray/pe/parallel-netcdf/1.12.3.13/gnu/12.3
+      modules:
+      - cray-parallel-netcdf/1.12.3.13
+    buildable: false
 # Packages which have not been discovered by spack external find 
 # and packages which are not in the OS image but low-level.
 # Declare libs as externals only if a -devel OS package is installed