diff --git a/.isort.cfg b/.isort.cfg
index ad424c0..98c297f 100644
--- a/.isort.cfg
+++ b/.isort.cfg
@@ -7,5 +7,5 @@ import_heading_stdlib=Core Library
 import_heading_firstparty=First party
 import_heading_thirdparty=Third party
 import_heading_localfolder=Local
-known_third_party =astor,pytest,setuptools
+known_third_party =astor,pytest
 include_trailing_comma=True
diff --git a/Makefile b/Makefile
index 8fad9bb..145286f 100644
--- a/Makefile
+++ b/Makefile
@@ -9,10 +9,9 @@ lint:
 
 upload:
 	make clean
-	python setup.py sdist bdist_wheel && twine upload dist/*
+	flit publish
 
 clean:
-	python setup.py clean --all
 	pyclean .
 	rm -rf *.pyc build dist tests/reports docs/build .pytest_cache .tox .coverage html/
 
diff --git a/requirements/dev.in b/requirements/dev.in
index a53239b..eb8aeb9 100644
--- a/requirements/dev.in
+++ b/requirements/dev.in
@@ -1,8 +1,8 @@
+flit
 junit2html
 pip-tools
 pre-commit
 pytest
 pytest-cov
 pytest-timeout
-twine
 wheel
diff --git a/requirements/dev.txt b/requirements/dev.txt
index f9986de..fb4e5c8 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -1,69 +1,51 @@
 #
-# This file is autogenerated by pip-compile with python 3.10
-# To update, run:
+# This file is autogenerated by pip-compile with Python 3.10
+# by the following command:
 #
 #    pip-compile requirements/dev.in
 #
 attrs==21.4.0
     # via pytest
-bleach==4.1.0
-    # via readme-renderer
 certifi==2021.10.8
     # via requests
-cffi==1.15.0
-    # via cryptography
 cfgv==3.3.1
     # via pre-commit
 charset-normalizer==2.0.12
     # via requests
 click==8.0.4
     # via pip-tools
-colorama==0.4.4
-    # via twine
 coverage[toml]==6.3.2
     # via pytest-cov
-cryptography==36.0.2
-    # via secretstorage
 distlib==0.3.4
     # via virtualenv
 docutils==0.18.1
-    # via readme-renderer
+    # via flit
 filelock==3.6.0
     # via virtualenv
+flit==3.8.0
+    # via -r requirements/dev.in
+flit-core==3.8.0
+    # via flit
 identify==2.4.12
     # via pre-commit
 idna==3.3
     # via requests
-importlib-metadata==4.11.3
-    # via
-    #   keyring
-    #   twine
 iniconfig==1.1.1
     # via pytest
-jeepney==0.7.1
-    # via
-    #   keyring
-    #   secretstorage
 jinja2==3.1.1
     # via junit2html
 junit2html==30.0.6
     # via -r requirements/dev.in
-keyring==23.5.0
-    # via twine
 markupsafe==2.1.1
     # via jinja2
 nodeenv==1.6.0
     # via pre-commit
 packaging==21.3
-    # via
-    #   bleach
-    #   pytest
+    # via pytest
 pep517==0.12.0
     # via pip-tools
 pip-tools==6.5.1
     # via -r requirements/dev.in
-pkginfo==1.8.2
-    # via twine
 platformdirs==2.5.1
     # via virtualenv
 pluggy==1.0.0
@@ -72,10 +54,6 @@ pre-commit==2.17.0
     # via -r requirements/dev.in
 py==1.11.0
     # via pytest
-pycparser==2.21
-    # via cffi
-pygments==2.11.2
-    # via readme-renderer
 pyparsing==3.0.7
     # via packaging
 pytest==7.1.1
@@ -89,22 +67,10 @@ pytest-timeout==2.1.0
     # via -r requirements/dev.in
 pyyaml==6.0
     # via pre-commit
-readme-renderer==34.0
-    # via twine
 requests==2.27.1
-    # via
-    #   requests-toolbelt
-    #   twine
-requests-toolbelt==0.9.1
-    # via twine
-rfc3986==2.0.0
-    # via twine
-secretstorage==3.3.1
-    # via keyring
+    # via flit
 six==1.16.0
-    # via
-    #   bleach
-    #   virtualenv
+    # via virtualenv
 toml==0.10.2
     # via pre-commit
 tomli==2.0.1
@@ -112,24 +78,16 @@ tomli==2.0.1
     #   coverage
     #   pep517
     #   pytest
-tqdm==4.63.1
-    # via twine
-twine==3.8.0
-    # via -r requirements/dev.in
+tomli-w==1.0.0
+    # via flit
 urllib3==1.26.9
-    # via
-    #   requests
-    #   twine
+    # via requests
 virtualenv==20.14.0
     # via pre-commit
-webencodings==0.5.1
-    # via bleach
 wheel==0.37.1
     # via
     #   -r requirements/dev.in
     #   pip-tools
-zipp==3.7.0
-    # via importlib-metadata
 
 # The following packages are considered to be unsafe in a requirements file:
 # pip