diff --git a/meson.build b/meson.build
index c485c95..03012e0 100644
--- a/meson.build
+++ b/meson.build
@@ -1,20 +1,49 @@
 project(
-    'werpy_test_v4', 
+    'werpy_test_v5', 
     'c',
     version : '0.0.1',
     default_options : ['warning_level=3'])
 
-py = import('python').find_installation(pure: false)
+# Find Python
+py = import('python').find_installation('python3')
 
+# Find Cython
 cython = find_program('cython')
-pyx_files = files('werpy_test_v4/metrics.pyx')
+
+# Cython files
+pyx_files = files('werpy_test_v5/metrics.pyx')
+
+# Compile Cython files
 c_files = custom_target('cythonize',
                         output : 'metrics.c',
                         input : pyx_files,
                         command : [cython, '-3', '--fast-fail', '-o', '@OUTPUT@', '@INPUT@'])
 
+# Source files
+#sources = files(
+#    'werpy_test_v5/metrics.c'
+#)
+
+# Add the compiled Cython files to the sources
+#sources += c_files
+
+# Add NumPy include directories
+#numpy_includes = include_directories(py.get_install_dir() / 'numpy/core/include')
+#numpy_includes = include_directories('C:/Users/rossa/AppData/Local/Programs/Python/Python311/Lib/site-packages/numpy/core/include')
+# Find NumPy
+#numpy_dep = dependency('python3-numpy', method : 'pkg-config')
+# Find NumPy include directories
+numpy_includes = run_command(py, '-c', 'import numpy; print(numpy.get_include())').stdout().strip()
+
+
+
+# Cython module
 py.extension_module(
-    'werpy_test_v4',
+    'werpy_test_v5',
+#    sources,
     c_files,
+#    dependencies : numpy_dep,
+#    include_directories : numpy_includes,
+    include_directories : include_directories(numpy_includes),
     install : true
 )
diff --git a/pyproject.toml b/pyproject.toml
index 1579631..0c221f8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,10 +1,9 @@
 [build-system]
 build-backend = 'mesonpy'
-requires = ['meson-python', 'wheel', 'Cython']
-#requires = ['meson-python', 'wheel', 'Cython', 'numpy']
+requires = ['meson-python', 'wheel', 'Cython', 'numpy']
 
 [project]
-name = 'werpy_test_v4'
+name = 'werpy_test_v5'
 version = '0.0.1'
 description = 'A powerful yet lightweight Python package to calculate and analyze the Word Error Rate (WER).'
 readme = 'README.md'
diff --git a/werpy_test_v4/__init__.py b/werpy_test_v5/__init__.py
similarity index 100%
rename from werpy_test_v4/__init__.py
rename to werpy_test_v5/__init__.py
diff --git a/werpy_test_v4/errorhandler.py b/werpy_test_v5/errorhandler.py
similarity index 100%
rename from werpy_test_v4/errorhandler.py
rename to werpy_test_v5/errorhandler.py
diff --git a/werpy_test_v4/metrics.pyx b/werpy_test_v5/metrics.pyx
similarity index 100%
rename from werpy_test_v4/metrics.pyx
rename to werpy_test_v5/metrics.pyx
diff --git a/werpy_test_v4/normalize.py b/werpy_test_v5/normalize.py
similarity index 100%
rename from werpy_test_v4/normalize.py
rename to werpy_test_v5/normalize.py
diff --git a/werpy_test_v4/summary.py b/werpy_test_v5/summary.py
similarity index 100%
rename from werpy_test_v4/summary.py
rename to werpy_test_v5/summary.py
diff --git a/werpy_test_v4/summaryp.py b/werpy_test_v5/summaryp.py
similarity index 100%
rename from werpy_test_v4/summaryp.py
rename to werpy_test_v5/summaryp.py
diff --git a/werpy_test_v4/wer.py b/werpy_test_v5/wer.py
similarity index 100%
rename from werpy_test_v4/wer.py
rename to werpy_test_v5/wer.py
diff --git a/werpy_test_v4/werp.py b/werpy_test_v5/werp.py
similarity index 100%
rename from werpy_test_v4/werp.py
rename to werpy_test_v5/werp.py
diff --git a/werpy_test_v4/werps.py b/werpy_test_v5/werps.py
similarity index 100%
rename from werpy_test_v4/werps.py
rename to werpy_test_v5/werps.py
diff --git a/werpy_test_v4/wers.py b/werpy_test_v5/wers.py
similarity index 100%
rename from werpy_test_v4/wers.py
rename to werpy_test_v5/wers.py