diff --git a/.circleci/config.yml b/.circleci/config.yml
index 521119ca..a31faa07 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -51,7 +51,7 @@ variables:
 
       - restore_cache:
           keys:
-          - pip-cache-{{ arch }}-{{ .Environment.CIRCLE_JOB }}-{{ checksum "requirements-test.txt" }}-{{ checksum "requirements.txt" }}-{{ checksum "Pipfile" }}
+          - pip-cache-{{ arch }}-{{ .Environment.CIRCLE_JOB }}-{{ checksum "requirements-test.txt" }}-{{ checksum "requirements.txt" }}
 
       - run:
           name: install dependencies
@@ -66,7 +66,7 @@ variables:
       - save_cache:
           paths:
             - ./venv
-          key: pip-cache-{{ arch }}-{{ .Environment.CIRCLE_JOB }}-{{ checksum "requirements-test.txt" }}-{{ checksum "requirements.txt" }}-{{ checksum "Pipfile" }}
+          key: pip-cache-{{ arch }}-{{ .Environment.CIRCLE_JOB }}-{{ checksum "requirements-test.txt" }}-{{ checksum "requirements.txt" }}
 
       - run:
           name: run tests
@@ -119,7 +119,7 @@ jobs:
 
       - restore_cache:
           keys:
-          - pip-cache-{{ arch }}-{{ .Environment.CIRCLE_JOB }}-{{ checksum "requirements-test.txt" }}-{{ checksum "requirements.txt" }}-{{ checksum "Pipfile" }}
+          - pip-cache-{{ arch }}-{{ .Environment.CIRCLE_JOB }}-{{ checksum "requirements-test.txt" }}-{{ checksum "requirements.txt" }}
 
       - run:
           name: install dependencies
@@ -133,7 +133,7 @@ jobs:
       - save_cache:
           paths:
             - ./venv
-          key: pip-cache-{{ arch }}-{{ .Environment.CIRCLE_JOB }}-{{ checksum "requirements-test.txt" }}-{{ checksum "requirements.txt" }}-{{ checksum "Pipfile" }}
+          key: pip-cache-{{ arch }}-{{ .Environment.CIRCLE_JOB }}-{{ checksum "requirements-test.txt" }}-{{ checksum "requirements.txt" }}
 
 
       - run:
diff --git a/.pyup.yml b/.pyup.yml
index d1ccac56..d7347999 100644
--- a/.pyup.yml
+++ b/.pyup.yml
@@ -3,4 +3,3 @@
 requirements:
   - requirements.txt
   - test-requirements.txt
-  - Pipfile
diff --git a/Pipfile b/Pipfile
deleted file mode 100644
index 5dd59f65..00000000
--- a/Pipfile
+++ /dev/null
@@ -1,22 +0,0 @@
-[[source]]
-
-url = "https://pypi.python.org/simple"
-verify_ssl = true
-name = "pypi"
-
-
-[packages]
-
-beautifulsoup4 = "==4.9.1"
-peewee = "==3.13.3"
-requests = "==2.23.0"
-
-
-[dev-packages]
-
-coverage = "==5.1"
-flake8 = "==3.7.9"
-pyjokes = "==0.6.0"
-pytest = "==5.4.2"
-pytest-cov = "==2.9.0"
-pytest-flake8 = "==1.0.6"
diff --git a/Pipfile.lock b/Pipfile.lock
deleted file mode 100644
index 9d277332..00000000
--- a/Pipfile.lock
+++ /dev/null
@@ -1,245 +0,0 @@
-{
-    "_meta": {
-        "hash": {
-            "sha256": "298be599d454d99040878076586fdd45a13be917cf18120657aed941b8c1e999"
-        },
-        "pipfile-spec": 6,
-        "requires": {},
-        "sources": [
-            {
-                "name": "pypi",
-                "url": "https://pypi.python.org/simple",
-                "verify_ssl": true
-            }
-        ]
-    },
-    "default": {
-        "beautifulsoup4": {
-            "hashes": [
-                "sha256:034740f6cb549b4e932ae1ab975581e6103ac8f942200a0e9759065984391858",
-                "sha256:945065979fb8529dd2f37dbb58f00b661bdbcbebf954f93b32fdf5263ef35348",
-                "sha256:ba6d5c59906a85ac23dadfe5c88deaf3e179ef565f4898671253e50a78680718"
-            ],
-            "index": "pypi",
-            "version": "==4.7.1"
-        },
-        "certifi": {
-            "hashes": [
-                "sha256:046832c04d4e752f37383b628bc601a7ea7211496b4638f6514d0e5b9acc4939",
-                "sha256:945e3ba63a0b9f577b1395204e13c3a231f9bc0223888be653286534e5873695"
-            ],
-            "version": "==2019.6.16"
-        },
-        "chardet": {
-            "hashes": [
-                "sha256:84ab92ed1c4d4f16916e05906b6b75a6c0fb5db821cc65e70cbd64a3e2a5eaae",
-                "sha256:fc323ffcaeaed0e0a02bf4d117757b98aed530d9ed4531e3e15460124c106691"
-            ],
-            "version": "==3.0.4"
-        },
-        "idna": {
-            "hashes": [
-                "sha256:c357b3f628cf53ae2c4c05627ecc484553142ca23264e593d327bcde5e9c3407",
-                "sha256:ea8b7f6188e6fa117537c3df7da9fc686d485087abf6ac197f9c46432f7e4a3c"
-            ],
-            "version": "==2.8"
-        },
-        "peewee": {
-            "hashes": [
-                "sha256:bc879e1ffb7f7684f90d9dd236c77b5042118d079f94764f35e3806948829ac8"
-            ],
-            "version": "==3.9.6"
-        },
-        "requests": {
-            "hashes": [
-                "sha256:11e007a8a2aa0323f5a921e9e6a2d7e4e67d9877e85773fba9ba6419025cbeb4",
-                "sha256:9cf5292fcd0f598c671cfc1e0d7d1a7f13bb8085e9a590f48c010551dc6c4b31"
-            ],
-            "version": "==2.22.0"
-        },
-        "soupsieve": {
-            "hashes": [
-                "sha256:6898e82ecb03772a0d82bd0d0a10c0d6dcc342f77e0701d0ec4a8271be465ece",
-                "sha256:b20eff5e564529711544066d7dc0f7661df41232ae263619dede5059799cdfca"
-            ],
-            "version": "==1.9.1"
-        },
-        "urllib3": {
-            "hashes": [
-                "sha256:2393a695cd12afedd0dcb26fe5d50d0cf248e5a66f75dbd89a3d4eb333a61af4",
-                "sha256:a637e5fae88995b256e3409dc4d52c2e2e0ba32c42a6365fee8bbd2238de3cfb"
-            ],
-            "version": "==1.24.3"
-        }
-    },
-    "develop": {
-        "atomicwrites": {
-            "hashes": [
-                "sha256:03472c30eb2c5d1ba9227e4c2ca66ab8287fbfbbda3888aa93dc2e28fc6811b4",
-                "sha256:75a9445bac02d8d058d5e1fe689654ba5a6556a1dfd8ce6ec55a0ed79866cfa6"
-            ],
-            "version": "==1.3.0"
-        },
-        "attrs": {
-            "hashes": [
-                "sha256:69c0dbf2ed392de1cb5ec704444b08a5ef81680a61cb899dc08127123af36a79",
-                "sha256:f0b870f674851ecbfbbbd364d6b5cbdff9dcedbc7f3f5e18a6891057f21fe399"
-            ],
-            "version": "==19.1.0"
-        },
-        "coverage": {
-            "hashes": [
-                "sha256:3684fabf6b87a369017756b551cef29e505cb155ddb892a7a29277b978da88b9",
-                "sha256:39e088da9b284f1bd17c750ac672103779f7954ce6125fd4382134ac8d152d74",
-                "sha256:3c205bc11cc4fcc57b761c2da73b9b72a59f8d5ca89979afb0c1c6f9e53c7390",
-                "sha256:465ce53a8c0f3a7950dfb836438442f833cf6663d407f37d8c52fe7b6e56d7e8",
-                "sha256:48020e343fc40f72a442c8a1334284620f81295256a6b6ca6d8aa1350c763bbe",
-                "sha256:5296fc86ab612ec12394565c500b412a43b328b3907c0d14358950d06fd83baf",
-                "sha256:5f61bed2f7d9b6a9ab935150a6b23d7f84b8055524e7be7715b6513f3328138e",
-                "sha256:68a43a9f9f83693ce0414d17e019daee7ab3f7113a70c79a3dd4c2f704e4d741",
-                "sha256:6b8033d47fe22506856fe450470ccb1d8ba1ffb8463494a15cfc96392a288c09",
-                "sha256:7ad7536066b28863e5835e8cfeaa794b7fe352d99a8cded9f43d1161be8e9fbd",
-                "sha256:7bacb89ccf4bedb30b277e96e4cc68cd1369ca6841bde7b005191b54d3dd1034",
-                "sha256:839dc7c36501254e14331bcb98b27002aa415e4af7ea039d9009409b9d2d5420",
-                "sha256:8f9a95b66969cdea53ec992ecea5406c5bd99c9221f539bca1e8406b200ae98c",
-                "sha256:932c03d2d565f75961ba1d3cec41ddde00e162c5b46d03f7423edcb807734eab",
-                "sha256:988529edadc49039d205e0aa6ce049c5ccda4acb2d6c3c5c550c17e8c02c05ba",
-                "sha256:998d7e73548fe395eeb294495a04d38942edb66d1fa61eb70418871bc621227e",
-                "sha256:9de60893fb447d1e797f6bf08fdf0dbcda0c1e34c1b06c92bd3a363c0ea8c609",
-                "sha256:9e80d45d0c7fcee54e22771db7f1b0b126fb4a6c0a2e5afa72f66827207ff2f2",
-                "sha256:a545a3dfe5082dc8e8c3eb7f8a2cf4f2870902ff1860bd99b6198cfd1f9d1f49",
-                "sha256:a5d8f29e5ec661143621a8f4de51adfb300d7a476224156a39a392254f70687b",
-                "sha256:aca06bfba4759bbdb09bf52ebb15ae20268ee1f6747417837926fae990ebc41d",
-                "sha256:bb23b7a6fd666e551a3094ab896a57809e010059540ad20acbeec03a154224ce",
-                "sha256:bfd1d0ae7e292105f29d7deaa9d8f2916ed8553ab9d5f39ec65bcf5deadff3f9",
-                "sha256:c62ca0a38958f541a73cf86acdab020c2091631c137bd359c4f5bddde7b75fd4",
-                "sha256:c709d8bda72cf4cd348ccec2a4881f2c5848fd72903c185f363d361b2737f773",
-                "sha256:c968a6aa7e0b56ecbd28531ddf439c2ec103610d3e2bf3b75b813304f8cb7723",
-                "sha256:df785d8cb80539d0b55fd47183264b7002077859028dfe3070cf6359bf8b2d9c",
-                "sha256:f406628ca51e0ae90ae76ea8398677a921b36f0bd71aab2099dfed08abd0322f",
-                "sha256:f46087bbd95ebae244a0eda01a618aff11ec7a069b15a3ef8f6b520db523dcf1",
-                "sha256:f8019c5279eb32360ca03e9fac40a12667715546eed5c5eb59eb381f2f501260",
-                "sha256:fc5f4d209733750afd2714e9109816a29500718b32dd9a5db01c0cb3a019b96a"
-            ],
-            "index": "pypi",
-            "version": "==4.5.3"
-        },
-        "entrypoints": {
-            "hashes": [
-                "sha256:589f874b313739ad35be6e0cd7efde2a4e9b6fea91edcc34e58ecbb8dbe56d19",
-                "sha256:c70dd71abe5a8c85e55e12c19bd91ccfeec11a6e99044204511f9ed547d48451"
-            ],
-            "version": "==0.3"
-        },
-        "flake8": {
-            "hashes": [
-                "sha256:859996073f341f2670741b51ec1e67a01da142831aa1fdc6242dbf88dffbe661",
-                "sha256:a796a115208f5c03b18f332f7c11729812c8c3ded6c46319c59b53efd3819da8"
-            ],
-            "index": "pypi",
-            "version": "==3.7.7"
-        },
-        "importlib-metadata": {
-            "hashes": [
-                "sha256:6dfd58dfe281e8d240937776065dd3624ad5469c835248219bd16cf2e12dbeb7",
-                "sha256:cb6ee23b46173539939964df59d3d72c3e0c1b5d54b84f1d8a7e912fe43612db"
-            ],
-            "version": "==0.18"
-        },
-        "mccabe": {
-            "hashes": [
-                "sha256:ab8a6258860da4b6677da4bd2fe5dc2c659cff31b3ee4f7f5d64e79735b80d42",
-                "sha256:dd8d182285a0fe56bace7f45b5e7d1a6ebcbf524e8f3bd87eb0f125271b8831f"
-            ],
-            "version": "==0.6.1"
-        },
-        "more-itertools": {
-            "hashes": [
-                "sha256:2112d2ca570bb7c3e53ea1a35cd5df42bb0fd10c45f0fb97178679c3c03d64c7",
-                "sha256:c3e4748ba1aad8dba30a4886b0b1a2004f9a863837b8654e7059eebf727afa5a"
-            ],
-            "markers": "python_version > '2.7'",
-            "version": "==7.0.0"
-        },
-        "pluggy": {
-            "hashes": [
-                "sha256:0825a152ac059776623854c1543d65a4ad408eb3d33ee114dff91e57ec6ae6fc",
-                "sha256:b9817417e95936bf75d85d3f8767f7df6cdde751fc40aed3bb3074cbcb77757c"
-            ],
-            "version": "==0.12.0"
-        },
-        "py": {
-            "hashes": [
-                "sha256:64f65755aee5b381cea27766a3a147c3f15b9b6b9ac88676de66ba2ae36793fa",
-                "sha256:dc639b046a6e2cff5bbe40194ad65936d6ba360b52b3c3fe1d08a82dd50b5e53"
-            ],
-            "version": "==1.8.0"
-        },
-        "pycodestyle": {
-            "hashes": [
-                "sha256:95a2219d12372f05704562a14ec30bc76b05a5b297b21a5dfe3f6fac3491ae56",
-                "sha256:e40a936c9a450ad81df37f549d676d127b1b66000a6c500caa2b085bc0ca976c"
-            ],
-            "version": "==2.5.0"
-        },
-        "pyflakes": {
-            "hashes": [
-                "sha256:17dbeb2e3f4d772725c777fabc446d5634d1038f234e77343108ce445ea69ce0",
-                "sha256:d976835886f8c5b31d47970ed689944a0262b5f3afa00a5a7b4dc81e5449f8a2"
-            ],
-            "version": "==2.1.1"
-        },
-        "pyjokes": {
-            "hashes": [
-                "sha256:01b90474d5c889c21cae88f0d5fc8db1334b2891a16df75cbf9a0886bfdea653",
-                "sha256:745299c99b7a4015251b4876ecd59dd62803f458a9f0540d036f0f6627dcc67e"
-            ],
-            "index": "pypi",
-            "version": "==0.5.0"
-        },
-        "pytest": {
-            "hashes": [
-                "sha256:4a784f1d4f2ef198fe9b7aef793e9fa1a3b2f84e822d9b3a64a181293a572d45",
-                "sha256:926855726d8ae8371803f7b2e6ec0a69953d9c6311fa7c3b6c1b929ff92d27da"
-            ],
-            "version": "==4.6.3"
-        },
-        "pytest-cov": {
-            "hashes": [
-                "sha256:2b097cde81a302e1047331b48cadacf23577e431b61e9c6f49a1170bbe3d3da6",
-                "sha256:e00ea4fdde970725482f1f35630d12f074e121a23801aabf2ae154ec6bdd343a"
-            ],
-            "index": "pypi",
-            "version": "==2.7.1"
-        },
-        "pytest-flake8": {
-            "hashes": [
-                "sha256:4d225c13e787471502ff94409dcf6f7927049b2ec251c63b764a4b17447b60c0",
-                "sha256:d7e2b6b274a255b7ae35e9224c85294b471a83b76ecb6bd53c337ae977a499af"
-            ],
-            "index": "pypi",
-            "version": "==1.0.4"
-        },
-        "six": {
-            "hashes": [
-                "sha256:3350809f0555b11f552448330d0b52d5f24c91a322ea4a15ef22629740f3761c",
-                "sha256:d16a0141ec1a18405cd4ce8b4613101da75da0e9a7aec5bdd4fa804d0e0eba73"
-            ],
-            "version": "==1.12.0"
-        },
-        "wcwidth": {
-            "hashes": [
-                "sha256:3df37372226d6e63e1b1e1eda15c594bca98a22d33a23832a90998faa96bc65e",
-                "sha256:f4ebe71925af7b40a864553f761ed559b43544f8f71746c2d756c7fe788ade7c"
-            ],
-            "version": "==0.1.7"
-        },
-        "zipp": {
-            "hashes": [
-                "sha256:8c1019c6aad13642199fbe458275ad6a84907634cc9f0989877ccc4a2840139d",
-                "sha256:ca943a7e809cc12257001ccfb99e3563da9af99d52f261725e96dfe0f9275bc3"
-            ],
-            "version": "==0.5.1"
-        }
-    }
-}