diff --git a/fastcan/_cancorr_fast.pyx b/fastcan/_cancorr_fast.pyx
index fb7e49e..aa7fafd 100644
--- a/fastcan/_cancorr_fast.pyx
+++ b/fastcan/_cancorr_fast.pyx
@@ -3,13 +3,14 @@
 # Fast feature selection with sum squared canoncial correlation coefficents
 from libc.stdlib cimport malloc, free
 from libc.string cimport memset
-from cython cimport floating
+from cython cimport floating, final
 from cython.parallel import prange
 from scipy.linalg.cython_blas cimport isamax, idamax
 from sklearn.utils._cython_blas cimport ColMajor, NoTrans
 from sklearn.utils._cython_blas cimport _dot, _scal, _nrm2, _gemm, _axpy
 from sklearn.utils._typedefs cimport int32_t
 
+@final
 cdef unsigned int _bsum(
     bint* x,
     unsigned int n,
@@ -23,6 +24,7 @@ cdef unsigned int _bsum(
         total += x[i]
     return total
 
+@final
 cdef int _iamax(
     int n,
     const floating *x,
@@ -38,6 +40,7 @@ cdef int _iamax(
     else:
         return idamax(&n, <double *> x, &incx) - 1
 
+@final
 cdef bint _normv(
     floating[::1] x,            # IN/OUT
 ) noexcept nogil:
@@ -58,6 +61,7 @@ cdef bint _normv(
     _scal(n_samples, x_norm, &x[0], 1)
     return False
 
+@final
 cdef void _normm(
     floating[::1, :] X,     # IN/OUT
     bint* m,            # IN/OUT
@@ -84,7 +88,7 @@ cdef void _normm(
             x_norm = 1.0/x_norm
             _scal(n_samples, x_norm, &X[0, j], 1)
 
-
+@final
 cdef floating _sscvm(
     const floating[::1] w,      # IN
     const floating[::1, :] V,   # IN
@@ -114,6 +118,7 @@ cdef floating _sscvm(
     free(r)
     return r2
 
+@final
 cdef void _mgsvv(
     const floating[::1] w,      # IN
     floating[::1] x,            # IN/OUT
@@ -133,7 +138,7 @@ cdef void _mgsvv(
     # x = x - w*r
     _axpy(n_samples, -r, &w[0], 1, &x[0], 1)
 
-
+@final
 cpdef int _forward_search(
     floating[::1, :] X,               # IN/OUT
     floating[::1, :] V,               # IN
diff --git a/meson.build b/meson.build
index 6902e1a..773602e 100644
--- a/meson.build
+++ b/meson.build
@@ -1,7 +1,7 @@
 project(
   'fastcan',
   'c', 'cython',
-  version: '0.1.26',
+  version: '0.2.1',
   license: 'MIT',
   meson_version: '>= 1.1.0',
   default_options: [
diff --git a/pixi.lock b/pixi.lock
index 449b467..54be6f7 100644
--- a/pixi.lock
+++ b/pixi.lock
@@ -13,7 +13,7 @@ environments:
       - conda: https://conda.anaconda.org/conda-forge/linux-64/bzip2-1.0.8-h4bc722e_7.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-64/ca-certificates-2024.7.4-hbcca054_0.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-64/cython-3.0.11-py312hca68cad_0.conda
-      - conda: https://conda.anaconda.org/conda-forge/noarch/importlib-metadata-8.2.0-pyha770c72_0.conda
+      - conda: https://conda.anaconda.org/conda-forge/noarch/importlib-metadata-8.3.0-pyha770c72_0.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/joblib-1.4.2-pyhd8ed1ab_0.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-64/ld_impl_linux-64-2.40-hf3520f5_7.conda
       - conda: https://conda.anaconda.org/conda-forge/linux-64/libblas-3.9.0-23_linux64_openblas.conda
@@ -100,7 +100,7 @@ environments:
       - conda: https://conda.anaconda.org/conda-forge/osx-64/bzip2-1.0.8-hfdf4475_7.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-64/ca-certificates-2024.7.4-h8857fd0_0.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-64/cython-3.0.11-py312h28f332c_0.conda
-      - conda: https://conda.anaconda.org/conda-forge/noarch/importlib-metadata-8.2.0-pyha770c72_0.conda
+      - conda: https://conda.anaconda.org/conda-forge/noarch/importlib-metadata-8.3.0-pyha770c72_0.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/joblib-1.4.2-pyhd8ed1ab_0.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-64/libblas-3.9.0-22_osx64_openblas.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-64/libcblas-3.9.0-22_osx64_openblas.conda
@@ -182,7 +182,7 @@ environments:
       - conda: https://conda.anaconda.org/conda-forge/osx-arm64/bzip2-1.0.8-h99b78c6_7.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-arm64/ca-certificates-2024.7.4-hf0a4a13_0.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-arm64/cython-3.0.11-py312h5c2e7bc_0.conda
-      - conda: https://conda.anaconda.org/conda-forge/noarch/importlib-metadata-8.2.0-pyha770c72_0.conda
+      - conda: https://conda.anaconda.org/conda-forge/noarch/importlib-metadata-8.3.0-pyha770c72_0.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/joblib-1.4.2-pyhd8ed1ab_0.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-arm64/libblas-3.9.0-23_osxarm64_openblas.conda
       - conda: https://conda.anaconda.org/conda-forge/osx-arm64/libcblas-3.9.0-23_osxarm64_openblas.conda
@@ -264,7 +264,7 @@ environments:
       - conda: https://conda.anaconda.org/conda-forge/win-64/bzip2-1.0.8-h2466b09_7.conda
       - conda: https://conda.anaconda.org/conda-forge/win-64/ca-certificates-2024.7.4-h56e8100_0.conda
       - conda: https://conda.anaconda.org/conda-forge/win-64/cython-3.0.11-py312h275cf98_0.conda
-      - conda: https://conda.anaconda.org/conda-forge/noarch/importlib-metadata-8.2.0-pyha770c72_0.conda
+      - conda: https://conda.anaconda.org/conda-forge/noarch/importlib-metadata-8.3.0-pyha770c72_0.conda
       - conda: https://conda.anaconda.org/conda-forge/win-64/intel-openmp-2024.2.1-h57928b3_1083.conda
       - conda: https://conda.anaconda.org/conda-forge/noarch/joblib-1.4.2-pyhd8ed1ab_0.conda
       - conda: https://conda.anaconda.org/conda-forge/win-64/libblas-3.9.0-23_win64_mkl.conda
@@ -801,7 +801,7 @@ packages:
   name: fastcan
   version: 0.2.1
   path: .
-  sha256: 5d008e2df785be8fffa44ef208d510ba8d84024994d98ecc9dd546ca9b3d323f
+  sha256: ea92ccb317eae49ba15c2d2b9031e97bfcb8d6154ee7dffd9bd53ffca3e62f7b
   requires_dist:
   - scikit-learn>=1.5.0,<1.6
   - pytest ; extra == 'test'
@@ -838,22 +838,22 @@ packages:
   requires_python: '>=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*'
 - kind: conda
   name: importlib-metadata
-  version: 8.2.0
+  version: 8.3.0
   build: pyha770c72_0
   subdir: noarch
   noarch: python
-  url: https://conda.anaconda.org/conda-forge/noarch/importlib-metadata-8.2.0-pyha770c72_0.conda
-  sha256: 15dd2beba1c6f780fec6c5351bbce815d27a29561f422fe830133c995ef90b8a
-  md5: c261d14fc7f49cdd403868998a18c318
+  url: https://conda.anaconda.org/conda-forge/noarch/importlib-metadata-8.3.0-pyha770c72_0.conda
+  sha256: e3b47fb8a7980823a009ca56c0ca3a573f5e7d035261476370806c7022936e45
+  md5: 2144a30dbedfbe592625e61d7cb8cdb5
   depends:
   - python >=3.8
   - zipp >=0.5
   license: Apache-2.0
   license_family: APACHE
   purls:
-  - pkg:pypi/importlib-metadata?source=hash-mapping
-  size: 28110
-  timestamp: 1721856614564
+  - pkg:pypi/importlib-metadata?source=compressed-mapping
+  size: 28353
+  timestamp: 1724124610766
 - kind: pypi
   name: iniconfig
   version: 2.0.0
@@ -2069,6 +2069,7 @@ packages:
   constrains:
   - numpy-base <0a0
   license: BSD-3-Clause
+  license_family: BSD
   purls:
   - pkg:pypi/numpy?source=compressed-mapping
   size: 8365718
@@ -2093,6 +2094,7 @@ packages:
   constrains:
   - numpy-base <0a0
   license: BSD-3-Clause
+  license_family: BSD
   purls:
   - pkg:pypi/numpy?source=compressed-mapping
   size: 6993044
@@ -2116,6 +2118,7 @@ packages:
   constrains:
   - numpy-base <0a0
   license: BSD-3-Clause
+  license_family: BSD
   purls:
   - pkg:pypi/numpy?source=compressed-mapping
   size: 7489811
@@ -2140,6 +2143,7 @@ packages:
   constrains:
   - numpy-base <0a0
   license: BSD-3-Clause
+  license_family: BSD
   purls:
   - pkg:pypi/numpy?source=compressed-mapping
   size: 6337151
diff --git a/pyproject.toml b/pyproject.toml
index b800394..d36278b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -69,7 +69,7 @@ test-coverage = { cmd = "rm -rf .coverage && pytest --cov-report $FMT --cov=$PAC
 [tool.pixi.feature.build.tasks]
 build-wheel = "rm -rf dist && python -m build -wnx -Cinstall-args=--tags=runtime,python-runtime,devel"
 build-sdist = "rm -rf dist && python -m build --sdist"
-rebuild = "uv pip install --no-deps --force-reinstall -e ."
+rebuild = "rm -rf build && uv pip install --no-deps --force-reinstall -e ."
 
 [tool.pixi.feature.fmt.tasks]
 fmt = { cmd = "black .", cwd = "fastcan" }