diff --git a/MANIFEST.in b/MANIFEST.in
deleted file mode 100644
index 8d092cef..00000000
--- a/MANIFEST.in
+++ /dev/null
@@ -1,10 +0,0 @@
-include README.md
-include LICENSE.txt
-include *.cff
-recursive-include TTS *.json
-recursive-include TTS *.html
-recursive-include TTS *.png
-recursive-include TTS *.md
-recursive-include TTS *.py
-recursive-include TTS *.pyx
-recursive-include images *.png
diff --git a/pyproject.toml b/pyproject.toml
index d13e2145..379187fe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,14 +1,27 @@
-[build-system]
-requires = [
-    "setuptools",
-    "setuptools-scm",
-    "cython>=3.0.0",
-    "numpy>=2.0.0",
-]
-build-backend = "setuptools.build_meta"
+#                   ,*++++++*,                ,*++++++*,
+#                *++.        .+++          *++.        .++*
+#              *+*     ,++++*   *+*      *+*   ,++++,     *+*
+#             ,+,   .++++++++++* ,++,,,,*+, ,++++++++++.   *+,
+#             *+.  .++++++++++++..++    *+.,++++++++++++.  .+*
+#             .+*   ++++++++++++.*+,    .+*.++++++++++++   *+,
+#              .++   *++++++++* ++,      .++.*++++++++*   ++,
+#               ,+++*.    . .*++,          ,++*.      .*+++*
+#              *+,   .,*++**.                  .**++**.   ,+*
+#             .+*                                          *+,
+#             *+.                   Coqui                  .+*
+#             *+*              +++   TTS  +++              *+*
+#             .+++*.            .          .             *+++.
+#              ,+* *+++*...                       ...*+++* *+,
+#               .++.    .""""+++++++****+++++++"""".     ++.
+#                 ,++.                                .++,
+#                   .++*                            *++.
+#                       *+++,                  ,+++*
+#                           .,*++++::::::++++*,.
+#                                  ``````
 
-[tool.setuptools.packages.find]
-include = ["TTS*"]
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
 
 [project]
 name = "coqui-tts"
@@ -152,6 +165,22 @@ tts-server = "TTS.server.server:main"
 [tool.uv]
 constraint-dependencies = ["numba>0.58.0"]
 
+[tool.hatch.build]
+exclude = [
+    "/.github",
+    "/.gitignore",
+    "/.pre-commit-config.yaml",
+    "/.readthedocs.yml",
+    "/Makefile",
+    "/dockerfiles",
+    "/run_bash_tests.sh",
+    "/scripts",
+    "/tests",
+]
+
+[tool.hatch.build.targets.wheel]
+packages = ["TTS"]
+
 [tool.ruff]
 line-length = 120
 extend-exclude = ["*.ipynb"]
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 1cf2def1..00000000
--- a/setup.py
+++ /dev/null
@@ -1,37 +0,0 @@
-#!/usr/bin/env python
-#                   ,*++++++*,                ,*++++++*,
-#                *++.        .+++          *++.        .++*
-#              *+*     ,++++*   *+*      *+*   ,++++,     *+*
-#             ,+,   .++++++++++* ,++,,,,*+, ,++++++++++.   *+,
-#             *+.  .++++++++++++..++    *+.,++++++++++++.  .+*
-#             .+*   ++++++++++++.*+,    .+*.++++++++++++   *+,
-#              .++   *++++++++* ++,      .++.*++++++++*   ++,
-#               ,+++*.    . .*++,          ,++*.      .*+++*
-#              *+,   .,*++**.                  .**++**.   ,+*
-#             .+*                                          *+,
-#             *+.                   Coqui                  .+*
-#             *+*              +++   TTS  +++              *+*
-#             .+++*.            .          .             *+++.
-#              ,+* *+++*...                       ...*+++* *+,
-#               .++.    .""""+++++++****+++++++"""".     ++.
-#                 ,++.                                .++,
-#                   .++*                            *++.
-#                       *+++,                  ,+++*
-#                           .,*++++::::::++++*,.
-#                                  ``````
-
-import numpy
-from Cython.Build import cythonize
-from setuptools import Extension, setup
-
-exts = [
-    Extension(
-        name="TTS.tts.utils.monotonic_align.core",
-        sources=["TTS/tts/utils/monotonic_align/core.pyx"],
-    )
-]
-setup(
-    include_dirs=numpy.get_include(),
-    ext_modules=cythonize(exts, language_level=3),
-    zip_safe=False,
-)