diff --git a/Pipfile.lock b/Pipfile.lock
index 4fe11d4..5cbd5a3 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -26,18 +26,18 @@
         },
         "pytz": {
             "hashes": [
-                "sha256:a494d53b6d39c3c6e44c3bec237336e14305e4f29bbf800b599253057fbb79ed",
-                "sha256:c35965d010ce31b23eeb663ed3cc8c906275d6be1a34393a1d73a41febf4a048"
+                "sha256:83a4a90894bf38e243cf052c8b58f381bfe9a7a483f6a9cab140bc7f702ac4da",
+                "sha256:eb10ce3e7736052ed3623d49975ce333bcd712c7bb19a58b9e2089d4057d0798"
             ],
-            "version": "==2020.1"
+            "version": "==2021.1"
         },
         "urllib3": {
             "hashes": [
-                "sha256:3018294ebefce6572a474f0604c2021e33b3fd8006ecd11d62107a5d2a963527",
-                "sha256:88206b0eb87e6d677d424843ac5209e3fb9d0190d0ee169599165ec25e9d9115"
+                "sha256:753a0374df26658f99d826cfe40394a686d05985786d946fbe4165b5148f5a7c",
+                "sha256:a7acd0977125325f516bda9735fa7142b909a8d01e8b2e4c8108d0984e6e0098"
             ],
             "index": "pypi",
-            "version": "==1.25.9"
+            "version": "==1.26.5"
         }
     },
     "develop": {
@@ -50,11 +50,11 @@
         },
         "backports.functools-lru-cache": {
             "hashes": [
-                "sha256:0bada4c2f8a43d533e4ecb7a12214d9420e66eb206d54bf2d682581ca4b80848",
-                "sha256:8fde5f188da2d593bd5bc0be98d9abc46c95bb8a9dde93429570192ee6cc2d4a"
+                "sha256:d5ed2169378b67d3c545e5600d363a923b09c456dab1593914935a68ad478271",
+                "sha256:dbead04b9daa817909ec64e8d2855fb78feafe0b901d4568758e3a60559d8978"
             ],
-            "markers": "python_version < '3.2'",
-            "version": "==1.6.1"
+            "markers": "python_version < '3.4'",
+            "version": "==1.6.4"
         },
         "configparser": {
             "hashes": [
@@ -90,26 +90,30 @@
         },
         "lazy-object-proxy": {
             "hashes": [
-                "sha256:0aef3fa29f7d1194d6f8a99382b1b844e5a14d3bc1ef82c3b1c4fb7e7e2019bc",
-                "sha256:159ae2bbb4dc3ba506aeba868d14e56a754c0be402d1f0d7fdb264e0bdf2b095",
-                "sha256:161a68a427022bf13e249458be2cb8da56b055988c584d372a917c665825ae9a",
-                "sha256:2d58f0e6395bf41087a383a48b06b42165f3b699f1aa41ba201db84ab77be63d",
-                "sha256:311c9d1840042fc8e2dd80fc80272a7ea73e7646745556153c9cda85a4628b18",
-                "sha256:35c3ad7b7f7d5d4a54a80f0ff5a41ab186237d6486843f8dde00c42cfab33905",
-                "sha256:459ef557e669d0046fe2b92eb4822c097c00b5ef9d11df0f9bd7d4267acdfc52",
-                "sha256:4a50513b6be001b9b7be2c435478fe9669249c77c241813907a44cda1fcd03f4",
-                "sha256:51035b175740c44707694c521560b55b66da9d5a7c545cf22582bc02deb61664",
-                "sha256:96f2cdb35bdfda10e075f12892a42cff5179bbda698992b845f36c5e92755d33",
-                "sha256:a0aed261060cd0372abf08d16399b1224dbb5b400312e6b00f2b23eabe1d4e96",
-                "sha256:a6052c4c7d95de2345d9c58fc0fe34fff6c27a8ed8550dafeb18ada84406cc99",
-                "sha256:cbf1354292a4f7abb6a0188f74f5e902e4510ebad105be1dbc4809d1ed92f77e",
-                "sha256:da82b2372f5ded8806eaac95b19af89a7174efdb418d4e7beb0c6ab09cee7d95",
-                "sha256:dd89f466c930d7cfe84c94b5cbe862867c88b269f23e5aa61d40945e0d746f54",
-                "sha256:e3183fbeb452ec11670c2d9bfd08a57bc87e46856b24d1c335f995239bedd0e1",
-                "sha256:e9a571e7168076a0d5ecaabd91e9032e86d815cca3a4bf0dafead539ef071aa5",
-                "sha256:ec6aba217d0c4f71cbe48aea962a382dedcd111f47b55e8b58d4aaca519bd360"
-            ],
-            "version": "==1.5.0"
+                "sha256:17e0967ba374fc24141738c69736da90e94419338fd4c7c7bef01ee26b339653",
+                "sha256:1fee665d2638491f4d6e55bd483e15ef21f6c8c2095f235fef72601021e64f61",
+                "sha256:22ddd618cefe54305df49e4c069fa65715be4ad0e78e8d252a33debf00f6ede2",
+                "sha256:24a5045889cc2729033b3e604d496c2b6f588c754f7a62027ad4437a7ecc4837",
+                "sha256:410283732af311b51b837894fa2f24f2c0039aa7f220135192b38fcc42bd43d3",
+                "sha256:4732c765372bd78a2d6b2150a6e99d00a78ec963375f236979c0626b97ed8e43",
+                "sha256:489000d368377571c6f982fba6497f2aa13c6d1facc40660963da62f5c379726",
+                "sha256:4f60460e9f1eb632584c9685bccea152f4ac2130e299784dbaf9fae9f49891b3",
+                "sha256:5743a5ab42ae40caa8421b320ebf3a998f89c85cdc8376d6b2e00bd12bd1b587",
+                "sha256:85fb7608121fd5621cc4377a8961d0b32ccf84a7285b4f1d21988b2eae2868e8",
+                "sha256:9698110e36e2df951c7c36b6729e96429c9c32b3331989ef19976592c5f3c77a",
+                "sha256:9d397bf41caad3f489e10774667310d73cb9c4258e9aed94b9ec734b34b495fd",
+                "sha256:b579f8acbf2bdd9ea200b1d5dea36abd93cabf56cf626ab9c744a432e15c815f",
+                "sha256:b865b01a2e7f96db0c5d12cfea590f98d8c5ba64ad222300d93ce6ff9138bcad",
+                "sha256:bf34e368e8dd976423396555078def5cfc3039ebc6fc06d1ae2c5a65eebbcde4",
+                "sha256:c6938967f8528b3668622a9ed3b31d145fab161a32f5891ea7b84f6b790be05b",
+                "sha256:d1c2676e3d840852a2de7c7d5d76407c772927addff8d742b9808fe0afccebdf",
+                "sha256:d7124f52f3bd259f510651450e18e0fd081ed82f3c08541dffc7b94b883aa981",
+                "sha256:d900d949b707778696fdf01036f58c9876a0d8bfe116e8d220cfd4b15f14e741",
+                "sha256:ebfd274dcd5133e0afae738e6d9da4323c3eb021b3e13052d8cbd0e457b1256e",
+                "sha256:ed361bb83436f117f9917d282a456f9e5009ea12fd6de8742d1a4752c3017e93",
+                "sha256:f5144c75445ae3ca2057faac03fda5a902eff196702b0a24daf1d6ce0650514b"
+            ],
+            "version": "==1.6.0"
         },
         "mccabe": {
             "hashes": [
@@ -143,18 +147,18 @@
         },
         "singledispatch": {
             "hashes": [
-                "sha256:5b06af87df13818d14f08a028e42f566640aef80805c3b50c5056b086e3c2b9c",
-                "sha256:833b46966687b3de7f438c761ac475213e53b306740f1abfaa86e1d1aae56aa8"
+                "sha256:0d428477703d8386eb6aeed6e522c9f22d49f4363cdf4ed6a2ba3dc276053e20",
+                "sha256:d5bb9405a4b8de48e36709238e8b91b4f6f300f81a5132ba2531a9a738eca391"
             ],
             "markers": "python_version < '3.4'",
-            "version": "==3.4.0.3"
+            "version": "==3.6.2"
         },
         "six": {
             "hashes": [
-                "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
-                "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
+                "sha256:1e61c37477a1626458e36f7b1d82aa5c9b094fa4802892072e49de9c60c4c926",
+                "sha256:8abb2f1d86890a2dfb989f9a77cfcfd3e47c2a354b01111771326f8aa26e0254"
             ],
-            "version": "==1.15.0"
+            "version": "==1.16.0"
         },
         "wrapt": {
             "hashes": [
diff --git a/dev-requirements.txt b/dev-requirements.txt
index 16ad252..f6b01ae 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,15 +1,15 @@
--i https://pypi.org/simple
+-i https://pypi.org/simple/
 astroid==1.6.6
-backports.functools-lru-cache==1.6.1 ; python_version < '3.2'
+backports.functools-lru-cache==1.6.4 ; python_version < '3.4'
 configparser==4.0.2 ; python_version == '2.7'
 enum34==1.1.10 ; python_version < '3.4'
 futures==3.3.0 ; python_version < '3.2'
 isort==4.3.21
-lazy-object-proxy==1.5.0
+lazy-object-proxy==1.6.0
 mccabe==0.6.1
 pylint-django==0.11
 pylint-plugin-utils==0.6
 pylint==1.8.4
-singledispatch==3.4.0.3 ; python_version < '3.4'
-six==1.15.0
+singledispatch==3.6.2 ; python_version < '3.4'
+six==1.16.0
 wrapt==1.12.1
diff --git a/requirements.txt b/requirements.txt
index 871a8f8..91013c4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
--i https://pypi.org/simple
+-i https://pypi.org/simple/
 django==1.11.29
-pytz==2020.1
-urllib3==1.25.9
+pytz==2021.1
+urllib3==1.26.5