diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
new file mode 100644
index 0000000..87fdb01
--- /dev/null
+++ b/.github/workflows/python-app.yml
@@ -0,0 +1,28 @@
+name: Python package
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python 3.10
+        uses: actions/setup-python@v3
+        with:
+          python-version: "3.10"
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r dev-requirements.txt
+      - name: Lint with flake8
+        run: |
+          flake8 repertorio/
+      - name: Format with black
+        run: |
+          black --check repertorio/
+      - name: Test with pytest
+        run: |
+          pytest --cov=repertorio/
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index d722219..c93ec30 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,11 +1,11 @@
 repos:
 -   repo: https://github.com/psf/black
-    rev: stable
+    rev: 22.3.0
     hooks:
     - id: black
-      language_version: python3.7
+      language_version: python3.10
 
 -   repo: https://gitlab.com/pycqa/flake8
-    rev: 'master'
+    rev: 4.0.1
     hooks:
     -   id: flake8
diff --git a/Pipfile b/Pipfile
deleted file mode 100644
index e19a484..0000000
--- a/Pipfile
+++ /dev/null
@@ -1,25 +0,0 @@
-[[source]]
-name = "pypi"
-url = "https://pypi.org/simple"
-verify_ssl = true
-
-[dev-packages]
-black = "*"
-ipdb = "*"
-setuptools = "*"
-wheel = "*"
-pytest = "*"
-pytest-cov = "*"
-pre-commit = "*"
-flake8 = "*"
-coveralls = "*"
-mypy = "*"
-
-[packages]
-requests = "*"
-
-[requires]
-python_version = "3.7"
-
-[pipenv]
-allow_prereleases = true
diff --git a/Pipfile.lock b/Pipfile.lock
deleted file mode 100644
index 2aa7d92..0000000
--- a/Pipfile.lock
+++ /dev/null
@@ -1,660 +0,0 @@
-{
-    "_meta": {
-        "hash": {
-            "sha256": "469e6c3372d891e79fdfb487f9214868a31683659648777fe7ba988db75bd9cc"
-        },
-        "pipfile-spec": 6,
-        "requires": {
-            "python_version": "3.7"
-        },
-        "sources": [
-            {
-                "name": "pypi",
-                "url": "https://pypi.org/simple",
-                "verify_ssl": true
-            }
-        ]
-    },
-    "default": {
-        "certifi": {
-            "hashes": [
-                "sha256:2bbf76fd432960138b3ef6dda3dde0544f27cbf8546c458e60baf371917ba9ee",
-                "sha256:50b1e4f8446b06f41be7dd6338db18e0990601dce795c2b1686458aa7e8fa7d8"
-            ],
-            "version": "==2021.5.30"
-        },
-        "charset-normalizer": {
-            "hashes": [
-                "sha256:0c8911edd15d19223366a194a513099a302055a962bca2cec0f54b8b63175d8b",
-                "sha256:f23667ebe1084be45f6ae0538e4a5a865206544097e4e8bbcacf42cd02a348f3"
-            ],
-            "markers": "python_version >= '3'",
-            "version": "==2.0.4"
-        },
-        "idna": {
-            "hashes": [
-                "sha256:14475042e284991034cb48e06f6851428fb14c4dc953acd9be9a5e95c7b6dd7a",
-                "sha256:467fbad99067910785144ce333826c71fb0e63a425657295239737f7ecd125f3"
-            ],
-            "markers": "python_version >= '3'",
-            "version": "==3.2"
-        },
-        "requests": {
-            "hashes": [
-                "sha256:6c1246513ecd5ecd4528a0906f910e8f0f9c6b8ec72030dc9fd154dc1a6efd24",
-                "sha256:b8aa58f8cf793ffd8782d3d8cb19e66ef36f7aba4353eec859e74678b01b07a7"
-            ],
-            "index": "pypi",
-            "version": "==2.26.0"
-        },
-        "urllib3": {
-            "hashes": [
-                "sha256:39fb8672126159acb139a7718dd10806104dec1e2f0f6c88aab05d17df10c8d4",
-                "sha256:f57b4c16c62fa2760b7e3d97c35b255512fb6b59a259730f36ba32ce9f8e342f"
-            ],
-            "version": "==1.26.6"
-        }
-    },
-    "develop": {
-        "appdirs": {
-            "hashes": [
-                "sha256:7d5d0167b2b1ba821647616af46a749d1c653740dd0d2415100fe26e27afdf41",
-                "sha256:a841dacd6b99318a741b166adb07e19ee71a274450e68237b4650ca1055ab128"
-            ],
-            "version": "==1.4.4"
-        },
-        "attrs": {
-            "hashes": [
-                "sha256:149e90d6d8ac20db7a955ad60cf0e6881a3f20d37096140088356da6c716b0b1",
-                "sha256:ef6aaac3ca6cd92904cdd0d83f629a15f18053ec84e6432106f7a4d04ae4f5fb"
-            ],
-            "version": "==21.2.0"
-        },
-        "backcall": {
-            "hashes": [
-                "sha256:5cbdbf27be5e7cfadb448baf0aa95508f91f2bbc6c6437cd9cd06e2a4c215e1e",
-                "sha256:fbbce6a29f263178a1f7915c1940bde0ec2b2a967566fe1c65c1dfb7422bd255"
-            ],
-            "version": "==0.2.0"
-        },
-        "backports.entry-points-selectable": {
-            "hashes": [
-                "sha256:988468260ec1c196dab6ae1149260e2f5472c9110334e5d51adcb77867361f6a",
-                "sha256:a6d9a871cde5e15b4c4a53e3d43ba890cc6861ec1332c9c2428c92f977192acc"
-            ],
-            "version": "==1.1.0"
-        },
-        "black": {
-            "hashes": [
-                "sha256:1c7aa6ada8ee864db745b22790a32f94b2795c253a75d6d9b5e439ff10d23116",
-                "sha256:c8373c6491de9362e39271630b65b964607bc5c79c83783547d76c839b3aa219"
-            ],
-            "index": "pypi",
-            "version": "==21.7b0"
-        },
-        "certifi": {
-            "hashes": [
-                "sha256:2bbf76fd432960138b3ef6dda3dde0544f27cbf8546c458e60baf371917ba9ee",
-                "sha256:50b1e4f8446b06f41be7dd6338db18e0990601dce795c2b1686458aa7e8fa7d8"
-            ],
-            "version": "==2021.5.30"
-        },
-        "cfgv": {
-            "hashes": [
-                "sha256:9e600479b3b99e8af981ecdfc80a0296104ee610cab48a5ae4ffd0b668650eb1",
-                "sha256:b449c9c6118fe8cca7fa5e00b9ec60ba08145d281d52164230a69211c5d597a1"
-            ],
-            "version": "==3.3.0"
-        },
-        "charset-normalizer": {
-            "hashes": [
-                "sha256:0c8911edd15d19223366a194a513099a302055a962bca2cec0f54b8b63175d8b",
-                "sha256:f23667ebe1084be45f6ae0538e4a5a865206544097e4e8bbcacf42cd02a348f3"
-            ],
-            "markers": "python_version >= '3'",
-            "version": "==2.0.4"
-        },
-        "click": {
-            "hashes": [
-                "sha256:8c04c11192119b1ef78ea049e0a6f0463e4c48ef00a30160c704337586f3ad7a",
-                "sha256:fba402a4a47334742d782209a7c79bc448911afe1149d07bdabdf480b3e2f4b6"
-            ],
-            "version": "==8.0.1"
-        },
-        "coverage": {
-            "hashes": [
-                "sha256:00368e6328ebff76197fff5f4d5704b44098f89d8d99a67a349ad6674ec0b157",
-                "sha256:0389690e0a1c94e9a246dc3130355d70805e51ca509db1bf07fbde27efb33aa4",
-                "sha256:065d2181f44392893d37d0a4f9ff60b485d705f733356d0a2fb292a58c6f2e0f",
-                "sha256:082febdba717c769da92d5e19e14a659ebef6daab19b67fced304b7b8d2475e2",
-                "sha256:0a35ae0d590effb7cc96e7d6935ae2ab8a51526a111fbe0f12d1671aa9fdc377",
-                "sha256:142493f0400a0bd5acf03c52971229e937323c3e24c372800ae1c44a503e0921",
-                "sha256:186f53367a08e8d24cc534c7cbfa43a82d1618a48dec2e0c56e80577ec1888fe",
-                "sha256:2163a00bcd613e95e118c01ea2811f705fbbacf1904d657b24d306879e2303d3",
-                "sha256:24ecf342b1e23de259d81b3adc83578935babeb54f6950c9bd9534b12443a49c",
-                "sha256:2c24d3e09f433817ddd0cb2e8f82f8b42cd09a8ac558462fedf99be479ed4851",
-                "sha256:2d741575de4a13869c9d4a685235bacc897c94afd3703e2ad4fdc362f37e87da",
-                "sha256:305ca73c09dd84054a3a8f53d5b70e0325b5b303245d0b96ed505698dc7e8ea7",
-                "sha256:4bf1d0a390de707f8bfd49efdcdac9366ce77ed64cb35b344f58b1ec62517317",
-                "sha256:50d90d6b753debb7568621125aad4e5fb418e7bdcb0dba3fa6f4ee82994b35d4",
-                "sha256:5a2079bca21fa959608223b90cf2f95ce686a6497fb12bfaaa7bb24c3e298199",
-                "sha256:60c6d433f0357db7ed2a2a698fb75b8ce919ce547d6d6bc79c576e090f509768",
-                "sha256:66cfae29bccea703f02d8997f60d71e236c5a321588f5aa5a318bd88ca23dc0a",
-                "sha256:6d6fc990962559de1f3685eb3e365ca60f2e3257bfd145bf675c566b8ebb1944",
-                "sha256:703b126f3ad20c463b545e199c4da460695630da5fdfd949de6a6269b45eabab",
-                "sha256:730cee22c41852b90948343cdfd183db1e96a9de69fd4dabec3532c582afea68",
-                "sha256:7e4a16bde8a3b7424b2955130f5a6c29e741e7138fe05c5d9d72efc356076a80",
-                "sha256:801e8277958bc2e6cc1f2443a20a2a97f79583aa64524b130e1c0de44c287ca9",
-                "sha256:80baa69a78d5696c60b72dee44ac3d5ccf75ee82e84d018938ddf642d036a6a8",
-                "sha256:80c00ce9cef80afbf18d16cb3052f5601ba8d087501d829169eecb33c153346a",
-                "sha256:89db5a374d793344087732207ee15869549486b2148e3e2e6effe22146351fcd",
-                "sha256:917b98cc5725ea2e0b88c74d34182589a9be07092cb35b861ea9e74189174f71",
-                "sha256:9398f8fd89f6f260e94e57559df1885b8200b18312824b617a8789e0f5e7dc74",
-                "sha256:95b6f212bb0c7379f1f2f6e47c722fbdc7355d8b7488a68649e83dfa29522704",
-                "sha256:9f23313f3e494475581d46de3b8b6bdcf618ee1df412490e779a9aa0a6c72162",
-                "sha256:9f6f26e5b129bb0218aab30d368d6ead750517a457986f8854b1df4b4c318098",
-                "sha256:a502693c83a2c6558bc45b4c2dc01a00c9b99cb3cf846913438933a44af174fc",
-                "sha256:aa4999130a8e892fa9051edc18bf4daa0a2839d3f3de2dcfcbf0ae4619ee3b5e",
-                "sha256:b10be0b80784c1beb8061e5ce938d8511a182125de5fc695a60f0561b984d361",
-                "sha256:b1f7b23a606aaf2464eb81c23b5b20623e2ba44b4aaca6ea9bfe00e84a1a5264",
-                "sha256:b78c8d232d97dbc8ad3a3d94cc15fccabe9a331685d76d2e5cb5284acc4a5feb",
-                "sha256:b88fa862817035ad7921f2641c27a85dab12cc685ad3ef29c0caaf5b3d10a868",
-                "sha256:b93fb9137070899b5f10d6487724f4427b5945983a785e1e2f1102c5e175c516",
-                "sha256:b9639e16c1bc4eb8a78b3b30df4146bb78df5d52ba1b7454b634abd89aede6cc",
-                "sha256:baa3b6be365c97f80d92a397cb8963dcd9bc22d101b39784e77a9cad093812f8",
-                "sha256:c06c5758bae454a49dc3e7917804b46c31bb4a72cedfc8e7b4f17a318b3de9d6",
-                "sha256:c544153709e93ea7e9edcefee72f5afcf484a9cb526067065f9419419f4a3694",
-                "sha256:c6c74260ba130f7c20a340e8f9e544b0941621641f53edcf69e4602e12c9f29e",
-                "sha256:d040615ff5c02ffd97ba9f0f73b9db34c09b8142fbfdd363b2a79fa6a554242c",
-                "sha256:d85774b1ac09ec1d958e63baa436cc4c90e2e910294847ba51dcc3ca3ca04a63",
-                "sha256:e508bb216eee8350e77b436f9f99c4f2d8335ecb51483f5ffd8bf5e84aaa56d1",
-                "sha256:ea1cb38b1a52392ebb4e93eaf4a44b3cfdec35cca3f78a9a599f27b7f27031e2",
-                "sha256:ec310e0029d530d1043f638b7a326b349884421572626bc2909408da7b0d03e5",
-                "sha256:ed04b79f53fa975660f1a598120c504a0f4529170eeaf0d823fcc1f06f4d2e0f",
-                "sha256:f4909ee1ddabed351f0fa55063a7dbe498001e2245a9602d9fb0fd74afecdca9",
-                "sha256:f49ae9e19737493911e7f8e551310f719f463e442ea1ec92fe0804c62066a7e8",
-                "sha256:f4c93e6102087dda4931fcd50fa4ad44e8e43e09419290c5f05cc2c690961ebf",
-                "sha256:fa1b639d85af4794cb20d7cfd4c5ae38e94a418b17a2318a1992b470fb68260d"
-            ],
-            "version": "==5.6b1"
-        },
-        "coveralls": {
-            "hashes": [
-                "sha256:15a987d9df877fff44cd81948c5806ffb6eafb757b3443f737888358e96156ee",
-                "sha256:aedfcc5296b788ebaf8ace8029376e5f102f67c53d1373f2e821515c15b36527"
-            ],
-            "index": "pypi",
-            "version": "==3.2.0"
-        },
-        "decorator": {
-            "hashes": [
-                "sha256:6e5c199c16f7a9f0e3a61a4a54b3d27e7dad0dbdde92b944426cb20914376323",
-                "sha256:72ecfba4320a893c53f9706bebb2d55c270c1e51a28789361aa93e4a21319ed5"
-            ],
-            "version": "==5.0.9"
-        },
-        "distlib": {
-            "hashes": [
-                "sha256:106fef6dc37dd8c0e2c0a60d3fca3e77460a48907f335fa28420463a6f799736",
-                "sha256:23e223426b28491b1ced97dc3bbe183027419dfc7982b4fa2f05d5f3ff10711c"
-            ],
-            "version": "==0.3.2"
-        },
-        "docopt": {
-            "hashes": [
-                "sha256:49b3a825280bd66b3aa83585ef59c4a8c82f2c8a522dbe754a8bc8d08c85c491"
-            ],
-            "version": "==0.6.2"
-        },
-        "filelock": {
-            "hashes": [
-                "sha256:18d82244ee114f543149c66a6e0c14e9c4f8a1044b5cdaadd0f82159d6a6ff59",
-                "sha256:929b7d63ec5b7d6b71b0fa5ac14e030b3f70b75747cef1b10da9b879fef15836"
-            ],
-            "version": "==3.0.12"
-        },
-        "flake8": {
-            "hashes": [
-                "sha256:07528381786f2a6237b061f6e96610a4167b226cb926e2aa2b6b1d78057c576b",
-                "sha256:bf8fd333346d844f616e8d47905ef3a3384edae6b4e9beb0c5101e25e3110907"
-            ],
-            "index": "pypi",
-            "version": "==3.9.2"
-        },
-        "identify": {
-            "hashes": [
-                "sha256:7abaecbb414e385752e8ce02d8c494f4fbc780c975074b46172598a28f1ab839",
-                "sha256:a0e700637abcbd1caae58e0463861250095dfe330a8371733a471af706a4a29a"
-            ],
-            "version": "==2.2.11"
-        },
-        "idna": {
-            "hashes": [
-                "sha256:14475042e284991034cb48e06f6851428fb14c4dc953acd9be9a5e95c7b6dd7a",
-                "sha256:467fbad99067910785144ce333826c71fb0e63a425657295239737f7ecd125f3"
-            ],
-            "markers": "python_version >= '3'",
-            "version": "==3.2"
-        },
-        "importlib-metadata": {
-            "hashes": [
-                "sha256:01bd9dacafffebd89b0c00ba24d2704322c3e4c6996a9120d0a1bdbdc08e8bd2",
-                "sha256:75858eea2febdbbaf83e2242270a29aba654e7fbf34de4a559e2f3873878eba4"
-            ],
-            "markers": "python_version < '3.8'",
-            "version": "==4.6.2"
-        },
-        "iniconfig": {
-            "hashes": [
-                "sha256:011e24c64b7f47f6ebd835bb12a743f2fbe9a26d4cecaa7f53bc4f35ee9da8b3",
-                "sha256:bc3af051d7d14b2ee5ef9969666def0cd1a000e121eaea580d4a313df4b37f32"
-            ],
-            "version": "==1.1.1"
-        },
-        "ipdb": {
-            "hashes": [
-                "sha256:951bd9a64731c444fd907a5ce268543020086a697f6be08f7cc2c9a752a278c5"
-            ],
-            "index": "pypi",
-            "version": "==0.13.9"
-        },
-        "ipython": {
-            "hashes": [
-                "sha256:54bbd1fe3882457aaf28ae060a5ccdef97f212a741754e420028d4ec5c2291dc",
-                "sha256:aa21412f2b04ad1a652e30564fff6b4de04726ce875eab222c8430edc6db383a"
-            ],
-            "version": "==7.25.0"
-        },
-        "ipython-genutils": {
-            "hashes": [
-                "sha256:72dd37233799e619666c9f639a9da83c34013a73e8bbc79a7a6348d93c61fab8",
-                "sha256:eb2e116e75ecef9d4d228fdc66af54269afa26ab4463042e33785b887c628ba8"
-            ],
-            "version": "==0.2.0"
-        },
-        "jedi": {
-            "hashes": [
-                "sha256:18456d83f65f400ab0c2d3319e48520420ef43b23a086fdc05dff34132f0fb93",
-                "sha256:92550a404bad8afed881a137ec9a461fed49eca661414be45059329614ed0707"
-            ],
-            "version": "==0.18.0"
-        },
-        "matplotlib-inline": {
-            "hashes": [
-                "sha256:5cf1176f554abb4fa98cb362aa2b55c500147e4bdbb07e3fda359143e1da0811",
-                "sha256:f41d5ff73c9f5385775d5c0bc13b424535c8402fe70ea8210f93e11f3683993e"
-            ],
-            "version": "==0.1.2"
-        },
-        "mccabe": {
-            "hashes": [
-                "sha256:ab8a6258860da4b6677da4bd2fe5dc2c659cff31b3ee4f7f5d64e79735b80d42",
-                "sha256:dd8d182285a0fe56bace7f45b5e7d1a6ebcbf524e8f3bd87eb0f125271b8831f"
-            ],
-            "version": "==0.6.1"
-        },
-        "mypy": {
-            "hashes": [
-                "sha256:088cd9c7904b4ad80bec811053272986611b84221835e079be5bcad029e79dd9",
-                "sha256:0aadfb2d3935988ec3815952e44058a3100499f5be5b28c34ac9d79f002a4a9a",
-                "sha256:119bed3832d961f3a880787bf621634ba042cb8dc850a7429f643508eeac97b9",
-                "sha256:1a85e280d4d217150ce8cb1a6dddffd14e753a4e0c3cf90baabb32cefa41b59e",
-                "sha256:3c4b8ca36877fc75339253721f69603a9c7fdb5d4d5a95a1a1b899d8b86a4de2",
-                "sha256:3e382b29f8e0ccf19a2df2b29a167591245df90c0b5a2542249873b5c1d78212",
-                "sha256:42c266ced41b65ed40a282c575705325fa7991af370036d3f134518336636f5b",
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-                "sha256:9ad2c92ec681e02baf81fdfa056fe0d818645efa9af1f1cd5fd6f1bd2bdfd805",
-                "sha256:9c6d1a54552b5330bc657b7ef0eae25d00ba7ffe85d9ea8ae6540d2197a3788c",
-                "sha256:aee0c1256be6c07bd3e1263ff920c325b59849dc95392a05f258bb9b259cf39c",
-                "sha256:af3d4a73793725138d6b334d9d247ce7e5f084d96284ed23f22ee626a7b88e39",
-                "sha256:b36b4f3920103a25e1d5d024d155c504080959582b928e91cb608a65c3a49e1a",
-                "sha256:b9574c6f03f685070d859e75c7f9eeca02d6933273b5e69572e5ff9d5e3931c3",
-                "sha256:bff6ad71c81b3bba8fa35f0f1921fb24ff4476235a6e94a26ada2e54370e6da7",
-                "sha256:c190f0899e9f9f8b6b7863debfb739abcb21a5c054f911ca3596d12b8a4c4c7f",
-                "sha256:c907f561b1e83e93fad565bac5ba9c22d96a54e7ea0267c708bffe863cbe4075",
-                "sha256:cae53c389825d3b46fb37538441f75d6aecc4174f615d048321b716df2757fb0",
-                "sha256:dd4a21253f42b8d2b48410cb31fe501d32f8b9fbeb1f55063ad102fe9c425e40",
-                "sha256:dde816ca9dac1d9c01dd504ea5967821606f02e510438120091b84e852367428",
-                "sha256:f2362f3cb0f3172c42938946dbc5b7843c2a28aec307c49100c8b38764eb6927",
-                "sha256:f328adcfebed9f11301eaedfa48e15bdece9b519fb27e6a8c01aa52a17ec31b3",
-                "sha256:f8afcf15cc511ada719a88e013cec87c11aff7b91f019295eb4530f96fe5ef2f",
-                "sha256:fb1bbeac803adea29cedd70781399c99138358c26d05fcbd23c13016b7f5ec65"
-            ],
-            "markers": "python_version < '3.8'",
-            "version": "==1.4.3"
-        },
-        "typing-extensions": {
-            "hashes": [
-                "sha256:0ac0f89795dd19de6b97debb0c6af1c70987fd80a2d62d1958f7e56fcc31b497",
-                "sha256:50b6f157849174217d0656f99dc82fe932884fb250826c18350e159ec6cdf342",
-                "sha256:779383f6086d90c99ae41cf0ff39aac8a7937a9283ce0a414e5dd782f4c94a84"
-            ],
-            "markers": "python_version < '3.8'",
-            "version": "==3.10.0.0"
-        },
-        "urllib3": {
-            "hashes": [
-                "sha256:39fb8672126159acb139a7718dd10806104dec1e2f0f6c88aab05d17df10c8d4",
-                "sha256:f57b4c16c62fa2760b7e3d97c35b255512fb6b59a259730f36ba32ce9f8e342f"
-            ],
-            "version": "==1.26.6"
-        },
-        "virtualenv": {
-            "hashes": [
-                "sha256:51df5d8a2fad5d1b13e088ff38a433475768ff61f202356bb9812c454c20ae45",
-                "sha256:e4fc84337dce37ba34ef520bf2d4392b392999dbe47df992870dc23230f6b758"
-            ],
-            "version": "==20.6.0"
-        },
-        "wcwidth": {
-            "hashes": [
-                "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784",
-                "sha256:c4d647b99872929fdb7bdcaa4fbe7f01413ed3d98077df798530e5b04f116c83"
-            ],
-            "version": "==0.2.5"
-        },
-        "wheel": {
-            "hashes": [
-                "sha256:78b5b185f0e5763c26ca1e324373aadd49182ca90e825f7853f4b2509215dc0e",
-                "sha256:e11eefd162658ea59a60a0f6c7d493a7190ea4b9a85e335b33489d9f17e0245e"
-            ],
-            "index": "pypi",
-            "version": "==0.36.2"
-        },
-        "zipp": {
-            "hashes": [
-                "sha256:957cfda87797e389580cb8b9e3870841ca991e2125350677b2ca83a0e99390a3",
-                "sha256:f5812b1e007e48cff63449a5e9f4e7ebea716b4111f9c4f9a645f91d579bf0c4"
-            ],
-            "version": "==3.5.0"
-        }
-    }
-}
diff --git a/dev-requirements.txt b/dev-requirements.txt
new file mode 100644
index 0000000..201509c
--- /dev/null
+++ b/dev-requirements.txt
@@ -0,0 +1,4 @@
+-r test-requirements.txt
+black==22.3.0
+flake8==4.0.1
+pre-commit==2.19.0
diff --git a/repertorio/repertorio.py b/repertorio/repertorio.py
index f024d25..697773f 100644
--- a/repertorio/repertorio.py
+++ b/repertorio/repertorio.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 """A setlist.fm API wrapper"""
 import logging
 from typing import Any, Callable, Dict, Optional
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..a743bbe
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1 @@
+requests==2.27.1
diff --git a/test-requirements.txt b/test-requirements.txt
new file mode 100644
index 0000000..2a04fd2
--- /dev/null
+++ b/test-requirements.txt
@@ -0,0 +1,6 @@
+-r requirements.txt
+pytest==7.1.2
+pytest-cov==3.0.0
+mypy==0.950
+types-requests==2.27.25
+coveralls==3.3.1
diff --git a/tox.ini b/tox.ini
index d0bdb6b..454416b 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,10 +1,10 @@
 [tox]
-envlist = py37
+envlist = py310
 
 [testenv]
-deps = pipenv
+deps = pip
 commands =
-    pipenv install --dev
+    pip install -r test-requirements.txt
     mypy repertorio
     pytest --cov=repertorio/
     - coveralls