diff --git a/Pipfile b/Pipfile
index b2f7ea3..b0fba5a 100644
--- a/Pipfile
+++ b/Pipfile
@@ -23,7 +23,7 @@ pytest-cov = "*"
 
 [packages]
 
-certifi = "==2019.11.28"
+certifi = "==2022.12.7"
 chardet = "*"
 idna = "*"
 mccabe = "*"
diff --git a/Pipfile.lock b/Pipfile.lock
index b3c0525..05fa2b3 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "80daa7c60ca6ebe1975c74ed14bc98f13370ace0f0ae53850a5bb8d346a37b29"
+            "sha256": "6de03ed178f8af67b8b7ceaf65fb15cbb86dbf5730904ea814de5331820afd6f"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -18,10 +18,11 @@
     "default": {
         "certifi": {
             "hashes": [
-                "sha256:017c25db2a153ce562900032d5bc68e9f191e44e9a0f762f373977de9df1fbb3",
-                "sha256:25b64c7da4cd7479594d035c08c2d809eb4aab3a26e5a990ea98cc450c320f1f"
+                "sha256:35824b4c3a97115964b408844d64aa14db1cc518f6562e8d7261699d1350a9e3",
+                "sha256:4ad3232f5e926d6718ec31cfc1fcadfde020920e278684144551c91769c7bc18"
             ],
-            "version": "==2019.11.28"
+            "index": "pypi",
+            "version": "==2022.12.7"
         },
         "chardet": {
             "hashes": [
@@ -65,14 +66,6 @@
         }
     },
     "develop": {
-        "atomicwrites": {
-            "hashes": [
-                "sha256:03472c30eb2c5d1ba9227e4c2ca66ab8287fbfbbda3888aa93dc2e28fc6811b4",
-                "sha256:75a9445bac02d8d058d5e1fe689654ba5a6556a1dfd8ce6ec55a0ed79866cfa6"
-            ],
-            "markers": "sys_platform == 'win32'",
-            "version": "==1.3.0"
-        },
         "attrs": {
             "hashes": [
                 "sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c",
@@ -81,13 +74,6 @@
             "index": "pypi",
             "version": "==19.3.0"
         },
-        "colorama": {
-            "hashes": [
-                "sha256:7d73d2a99753107a36ac6b455ee49046802e59d9d076ef8e47b61499fa29afff",
-                "sha256:e96da0d330793e2cb9485e9ddfd918d456036c7149416295932478192f4436a1"
-            ],
-            "version": "==0.4.3"
-        },
         "coverage": {
             "hashes": [
                 "sha256:0cd13a6e98c37b510a2d34c8281d5e1a226aaf9b65b7d770ef03c63169965351",
@@ -122,6 +108,7 @@
                 "sha256:e5a675f6829c53c87d79117a8eb656cc4a5f8918185a32fc93ba09778e90f6db",
                 "sha256:fec32646b98baf4a22fdceb08703965bd16dea09051fbeb31a04b5b6e72b846c"
             ],
+            "index": "pypi",
             "version": "==5.0"
         },
         "entrypoints": {
@@ -129,6 +116,7 @@
                 "sha256:589f874b313739ad35be6e0cd7efde2a4e9b6fea91edcc34e58ecbb8dbe56d19",
                 "sha256:c70dd71abe5a8c85e55e12c19bd91ccfeec11a6e99044204511f9ed547d48451"
             ],
+            "markers": "python_version >= '2.7'",
             "version": "==0.3"
         },
         "flake8": {
@@ -141,10 +129,11 @@
         },
         "importlib-metadata": {
             "hashes": [
-                "sha256:073a852570f92da5f744a3472af1b61e28e9f78ccf0c9117658dc32b15de7b45",
-                "sha256:d95141fbfa7ef2ec65cfd945e2af7e5a6ddbd7c8d9a25e66ff3be8e3daf9f60f"
+                "sha256:d5059f9f1e8e41f80e9c56c2ee58811450c31984dfa625329ffd7c0dad88a73b",
+                "sha256:d84d17e21670ec07990e1044a99efe8d615d860fd176fc29ef5c306068fda313"
             ],
-            "version": "==1.3.0"
+            "markers": "python_version < '3.8'",
+            "version": "==5.1.0"
         },
         "mccabe": {
             "hashes": [
@@ -159,14 +148,16 @@
                 "sha256:b84b238cce0d9adad5ed87e745778d20a3f8487d0f0cb8b8a586816c7496458d",
                 "sha256:c833ef592a0324bcc6a60e48440da07645063c453880c9477ceb22490aec1564"
             ],
+            "index": "pypi",
             "version": "==8.0.2"
         },
         "packaging": {
             "hashes": [
-                "sha256:28b924174df7a2fa32c1953825ff29c61e2f5e082343165438812f00d3a7fc47",
-                "sha256:d9551545c6d761f3def1677baf08ab2a3ca17c56879e70fecba2fc4dde4ed108"
+                "sha256:2198ec20bd4c017b8f9717e00f0c8714076fc2fd93816750ab48e2c41de2cfd3",
+                "sha256:957e2148ba0e1a3b282772e791ef1d8083648bc131c8ab0c1feba110ce1146c3"
             ],
-            "version": "==19.2"
+            "markers": "python_version >= '3.7'",
+            "version": "==22.0"
         },
         "pluggy": {
             "hashes": [
@@ -200,18 +191,12 @@
             "index": "pypi",
             "version": "==2.1.1"
         },
-        "pyparsing": {
-            "hashes": [
-                "sha256:20f995ecd72f2a1f4bf6b072b63b22e2eb457836601e76d6e5dfcd75436acc1f",
-                "sha256:4ca62001be367f01bd3e92ecbb79070272a9d4964dce6a48a82ff0b8bc7e683a"
-            ],
-            "version": "==2.4.5"
-        },
         "pytest": {
             "hashes": [
                 "sha256:6b571215b5a790f9b41f19f3531c53a45cf6bb8ef2988bc1ff9afb38270b25fa",
                 "sha256:e41d489ff43948babd0fad7ad5e49b8735d5d55e26628a58673c39ff61d95de4"
             ],
+            "index": "pypi",
             "version": "==5.3.2"
         },
         "pytest-cov": {
@@ -230,19 +215,28 @@
             "index": "pypi",
             "version": "==1.13.0"
         },
+        "typing-extensions": {
+            "hashes": [
+                "sha256:1511434bb92bf8dd198c12b1cc812e800d4181cfcb867674e0f8279cc93087aa",
+                "sha256:16fa4864408f655d35ec496218b85f79b3437c829e93320c7c9215ccfd92489e"
+            ],
+            "markers": "python_version < '3.8'",
+            "version": "==4.4.0"
+        },
         "wcwidth": {
             "hashes": [
-                "sha256:3df37372226d6e63e1b1e1eda15c594bca98a22d33a23832a90998faa96bc65e",
-                "sha256:f4ebe71925af7b40a864553f761ed559b43544f8f71746c2d756c7fe788ade7c"
+                "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784",
+                "sha256:c4d647b99872929fdb7bdcaa4fbe7f01413ed3d98077df798530e5b04f116c83"
             ],
-            "version": "==0.1.7"
+            "version": "==0.2.5"
         },
         "zipp": {
             "hashes": [
-                "sha256:3718b1cbcd963c7d4c5511a8240812904164b7f381b647143a89d3b98f9bcd8e",
-                "sha256:f06903e9f1f43b12d371004b4ac7b06ab39a44adc747266928ae6debfa7b3335"
+                "sha256:83a28fcb75844b5c0cdaf5aa4003c2d728c77e05f5aeabe8e95e56727005fbaa",
+                "sha256:a7a22e05929290a67401440b39690ae6563279bced5f314609d9d03798f56766"
             ],
-            "version": "==0.6.0"
+            "markers": "python_version >= '3.7'",
+            "version": "==3.11.0"
         }
     }
 }
diff --git a/requirements.txt b/requirements.txt
index 0c36bfe..1a78164 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,12 @@
-certifi==2019.11.28
+#
+# These requirements were autogenerated by pipenv
+# To regenerate from the project's Pipfile, run:
+#
+#    pipenv lock --requirements
+#
+
+-i https://pypi.org/simple/
+certifi==2022.12.7
 chardet==3.0.4
 idna==2.8
 mccabe==0.6.1