diff --git a/.ci_support/linux_64_.yaml b/.ci_support/linux_64_.yaml
index 1ceb304..c9ec322 100644
--- a/.ci_support/linux_64_.yaml
+++ b/.ci_support/linux_64_.yaml
@@ -19,7 +19,7 @@ libboost_headers:
 libscotch:
 - 7.0.10
 mkl_devel:
-- '2024'
+- '2025'
 mumps_seq:
 - 5.8.1
 numpy:
diff --git a/.ci_support/migrations/mkl2025.yaml b/.ci_support/migrations/mkl2025.yaml
new file mode 100644
index 0000000..90f5cf8
--- /dev/null
+++ b/.ci_support/migrations/mkl2025.yaml
@@ -0,0 +1,12 @@
+__migrator:
+  build_number: 1
+  commit_message: Rebuild for mkl 2025
+  kind: version
+  migration_number: 1
+migrator_ts: 1731082955.2367358
+mkl:
+- '2025'  # [not osx]
+- '2023'  # [osx]
+mkl_devel:
+- '2025'  # [not osx]
+- '2023'  # [osx]
diff --git a/.ci_support/win_64_.yaml b/.ci_support/win_64_.yaml
index 8414f2a..6b261ba 100644
--- a/.ci_support/win_64_.yaml
+++ b/.ci_support/win_64_.yaml
@@ -11,7 +11,7 @@ github_actions_labels:
 libboost_headers:
 - '1.88'
 mkl_devel:
-- '2024'
+- '2025'
 mumps_seq:
 - 5.8.1
 numpy:
diff --git a/.scripts/run_osx_build.sh b/.scripts/run_osx_build.sh
index e6b374e..df767d0 100755
--- a/.scripts/run_osx_build.sh
+++ b/.scripts/run_osx_build.sh
@@ -63,6 +63,25 @@ if [[ "${sha:-}" == "" ]]; then
   sha=$(git rev-parse HEAD)
 fi
 
+if [[ "${OSX_SDK_DIR:-}" == "" ]]; then
+  if [[ "${CI:-}" == "" ]]; then
+    echo "Please set OSX_SDK_DIR to a directory where SDKs can be downloaded to. Aborting"
+    exit 1
+  else
+    export OSX_SDK_DIR=/opt/conda-sdks
+    /usr/bin/sudo mkdir -p "${OSX_SDK_DIR}"
+    /usr/bin/sudo chown "${USER}" "${OSX_SDK_DIR}"
+  fi
+else
+  if tmpf=$(mktemp -p "$OSX_SDK_DIR" tmp.XXXXXXXX 2>/dev/null); then
+      rm -f "$tmpf"
+      echo "OSX_SDK_DIR is writeable without sudo, continuing"
+  else
+      echo "User-provided OSX_SDK_DIR is not writeable for current user! Aborting"
+      exit 1
+  fi
+fi
+
 echo -e "\n\nRunning the build setup script."
 source run_conda_forge_build_setup
 
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index 9305271..c5ded3b 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -1,4 +1,4 @@
-{% set version = "2.5.1" %}
+{% set version = "2.5.1.1" %}
 
 package:
   name: muscat-split
@@ -7,10 +7,10 @@ package:
 
 source:
   url: https://gitlab.com/drti/muscat/-/archive/{{ version }}/muscat-{{ version }}.tar.bz2
-  sha256: 60ce66aeabf8c71af1f3b39bc319cc853178c825a265c66e662bba671d3b202a
+  sha256: 1a97cb166959ef786469668b727c0c53ebfe115a466ca895440a1a189570187f
 
 build:
-  number: 0
+  number: 1
 
 
 outputs:
@@ -37,12 +37,9 @@ outputs:
       host:
         - ninja
         - python
-        # for the moment numpy 2 is activated only for python 3.13 (numpy 1 not available on py 3.13)
-        - numpy >=2.*  # [py >= 313]
-        - numpy =1.*  # [py < 313]
+        - numpy
         - cython
         - sympy
-        #first version of eigency compatible with numpy 2
         - eigency =3.4.0.4
         - mkl-devel
         - setuptools-scm
@@ -63,16 +60,15 @@ outputs:
         - dill
         - pywin32
         - networkx >=3.0
-        # cvxpy not available in osx for numpy 2 (numpy 1 not available on python 3.13)
-        - cvxpy  # [not osx or py!=313 ]
+        - cvxpy
         - h5py
         - matplotlib-base
         - pycgns-core
         - mumps-seq   # [not osx]
         - mumps-include   # [linux]
+        - vcomp14  # [win]
       run:
         - python
-        - {{ pin_compatible('numpy') }}
         - scipy >=1.12
         - sympy
         - eigency =3.4.0.4
@@ -82,10 +78,11 @@ outputs:
         - kokkos =4.7.01 h*  # [linux]
         - kokkos =4.4.01 h*  # [not linux]
         - mmgsuite =5.8
+        - vcomp14  # [win]
     test:
       requires:
         - scipy
-        - cvxpy  # [not osx or py!=313 ]
+        - cvxpy
         - h5py
         - matplotlib-base
         - pycgns-core
@@ -93,6 +90,7 @@ outputs:
       imports:
         - Muscat
       commands:
+        - set OMP_NUM_THREADS=1
         - python -u -m Muscat.Helpers.Check -k Which -k Mumps  # [osx]
         - python -u -m Muscat.Helpers.Check  # [linux]
         - python -u -m Muscat.Helpers.Check -k AnisotropicMetricComputation -k Mumps  # [win]
@@ -102,8 +100,7 @@ outputs:
     requirements:
       host:
         - python
-        - numpy >=2.*  # [py >= 313]
-        - numpy =1.*  # [py < 313]
+        - numpy >=2.*
         - vtk <=9.4.2
         - psutil
         - h5py
@@ -113,6 +110,7 @@ outputs:
       run:
         - python
         - {{ pin_compatible('numpy') }}
+        - {{ pin_compatible('hdf5') }}
         - vtk <=9.4.2
         - psutil
         - h5py
@@ -120,7 +118,7 @@ outputs:
         - pyvista
         - networkx >=3.0
         - mmgsuite =5.8
-        - cvxpy  # [not osx or py!=313 ]
+        - cvxpy
         - pycgns-core
         - mumps-seq   # [not osx]
     test:
@@ -150,8 +148,7 @@ outputs:
       run:
         - {{ compiler('cxx') }}
         - python
-        - numpy >=2.*  # [py >= 313]
-        - numpy =1.*  # [py < 313]
+        - numpy >=2.*
         - sympy
         - cython
         - eigency =3.4.0.4
@@ -173,7 +170,7 @@ outputs:
         - kokkos =4.4.01 h*  # [not linux]
         - mmgsuite =5.8
         - pycgns-core
-        - cvxpy  # [not osx or py!=313 ]
+        - cvxpy
     test:
       imports:
         - numpy