diff --git a/spack-cuda.yaml b/spack-cuda.yaml
index c6bd2b4..4f05bc8 100644
--- a/spack-cuda.yaml
+++ b/spack-cuda.yaml
@@ -3,11 +3,10 @@ spack:
     - mpis:
       - mpich@3.4.2
     - core-packages:
-      - kokkos@4.4 +cuda +wrapper +cuda_lambda cuda_arch=61
+      - kokkos@4.7.01 +cuda +wrapper +cuda_lambda cuda_arch=61 cxxstd=20
       - fmt@10.2.1
       - spdlog@1.13.0
     - packages:
-      - p3a@main
       - seacas@2024-04-03 -x11 ^hdf5@1.14.1 ^fmt@10.2.1
       - arborx@1.7 +openmp +mpi
       - darma-vt +kokkos +trace_enabled@1.7.0
diff --git a/spack.yaml b/spack.yaml
index a2fdce3..ee41e03 100644
--- a/spack.yaml
+++ b/spack.yaml
@@ -3,11 +3,10 @@ spack:
     - mpis:
       - mpich@3.4.2
     - core-packages:
-      - kokkos@4.4 +openmp +serial
+      - kokkos@4.7.01 +openmp +serial cxxstd=20
       - fmt@10.2.1
       - spdlog@1.13.0
     - packages:
-      - p3a@main
       - seacas@2024-04-03 -x11 ^hdf5@1.14.1 ^fmt@10.2.1
       - arborx@1.7 +openmp +mpi
       - darma-vt +kokkos +trace_enabled@1.7.0