diff --git a/.github/ci/spack-envs/gcc_py_ompi_h5_ad2_arm64/spack.yaml b/.github/ci/spack-envs/gcc_py_ompi_h5_ad2_arm64/spack.yaml
index 878ffe1b87..7f051faa79 100644
--- a/.github/ci/spack-envs/gcc_py_ompi_h5_ad2_arm64/spack.yaml
+++ b/.github/ci/spack-envs/gcc_py_ompi_h5_ad2_arm64/spack.yaml
@@ -40,7 +40,7 @@ spack:
       buildable: False
     python:
       externals:
-      - spec: python@3.10.12
+      - spec: python@3.11.5
         prefix: /usr
       buildable: False
     hdf5: