diff --git a/Pipfile b/Pipfile
index bc89ff6..b3cad6f 100644
--- a/Pipfile
+++ b/Pipfile
@@ -7,16 +7,15 @@ name = "pypi"
 django = "*"
 django-extensions = "*"
 "psycopg2-binary" = "*"
-pytest = "*"
-pytest-django = "*"
 "flake8" = "*"
 factory-boy = "*"
 titlecase = "*"
 bleach = "*"
 
 [dev-packages]
-pylint = "*"
 mypy = "*"
+pytest = "*"
+pytest-django = "*"
 
 [requires]
 python_version = "3.6"
diff --git a/Pipfile.lock b/Pipfile.lock
index 4839806..874fa9e 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "77ef40c5c921d99d1a0826dca9dd8328afcf0d75031cbf01d65b581c6c4fbe57"
+            "sha256": "12d4ee05e41a375e62fe7f3b8256abc7ffb047263e5d91291dced74be8b64192"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -16,20 +16,6 @@
         ]
     },
     "default": {
-        "atomicwrites": {
-            "hashes": [
-                "sha256:03472c30eb2c5d1ba9227e4c2ca66ab8287fbfbbda3888aa93dc2e28fc6811b4",
-                "sha256:75a9445bac02d8d058d5e1fe689654ba5a6556a1dfd8ce6ec55a0ed79866cfa6"
-            ],
-            "version": "==1.3.0"
-        },
-        "attrs": {
-            "hashes": [
-                "sha256:10cbf6e27dbce8c30807caf056c8eb50917e0eaafe86347671b57254006c3e69",
-                "sha256:ca4be454458f9dec299268d472aaa5a11f67a4ff70093396e1ceae9c76cf4bbb"
-            ],
-            "version": "==18.2.0"
-        },
         "bleach": {
             "hashes": [
                 "sha256:213336e49e102af26d9cde77dd2d0397afabc5a6bf2fed985dc35b5d1e285a16",
@@ -40,19 +26,19 @@
         },
         "django": {
             "hashes": [
-                "sha256:a32c22af23634e1d11425574dce756098e015a165be02e4690179889b207c7a8",
-                "sha256:d6393918da830530a9516bbbcbf7f1214c3d733738779f06b0f649f49cc698c3"
+                "sha256:275bec66fd2588dd517ada59b8bfb23d4a9abc5a362349139ddda3c7ff6f5ade",
+                "sha256:939652e9d34d7d53d74d5d8ef82a19e5f8bb2de75618f7e5360691b6e9667963"
             ],
             "index": "pypi",
-            "version": "==2.1.5"
+            "version": "==2.1.7"
         },
         "django-extensions": {
             "hashes": [
-                "sha256:6fcedb2ea660c9dbf9ac59441721ffdd4ab5b753fbd6159c3e28f391a65bab46",
-                "sha256:a607459e5fa8c579a672131b63366fa52fab80adb2a862d362f5fb48cd2d2cac"
+                "sha256:109004f80b6f45ad1f56addaa59debca91d94aa0dc1cb19678b9364b4fe9b6f4",
+                "sha256:307766e5e6c1caffe76c5d99239d8115d14ae3f7cab2cd991fcffd763dad904b"
             ],
             "index": "pypi",
-            "version": "==2.1.5"
+            "version": "==2.1.6"
         },
         "entrypoints": {
             "hashes": [
@@ -78,11 +64,11 @@
         },
         "flake8": {
             "hashes": [
-                "sha256:c3ba1e130c813191db95c431a18cb4d20a468e98af7a77e2181b68574481ad36",
-                "sha256:fd9ddf503110bf3d8b1d270e8c673aab29ccb3dd6abf29bae1f54e5116ab4a91"
+                "sha256:859996073f341f2670741b51ec1e67a01da142831aa1fdc6242dbf88dffbe661",
+                "sha256:a796a115208f5c03b18f332f7c11729812c8c3ded6c46319c59b53efd3819da8"
             ],
             "index": "pypi",
-            "version": "==3.7.5"
+            "version": "==3.7.7"
         },
         "mccabe": {
             "hashes": [
@@ -91,21 +77,6 @@
             ],
             "version": "==0.6.1"
         },
-        "more-itertools": {
-            "hashes": [
-                "sha256:38a936c0a6d98a38bcc2d03fdaaedaba9f412879461dd2ceff8d37564d6522e4",
-                "sha256:c0a5785b1109a6bd7fac76d6837fd1feca158e54e521ccd2ae8bfe393cc9d4fc",
-                "sha256:fe7a7cae1ccb57d33952113ff4fa1bc5f879963600ed74918f1236e212ee50b9"
-            ],
-            "version": "==5.0.0"
-        },
-        "pluggy": {
-            "hashes": [
-                "sha256:8ddc32f03971bfdf900a81961a48ccf2fb677cf7715108f85295c67405798616",
-                "sha256:980710797ff6a041e9a73a5787804f848996ecaa6f8a1b1e08224a5894f2074a"
-            ],
-            "version": "==0.8.1"
-        },
         "psycopg2-binary": {
             "hashes": [
                 "sha256:19a2d1f3567b30f6c2bb3baea23f74f69d51f0c06c2e2082d0d9c28b0733a4c2",
@@ -142,13 +113,6 @@
             "index": "pypi",
             "version": "==2.7.7"
         },
-        "py": {
-            "hashes": [
-                "sha256:bf92637198836372b520efcba9e020c330123be8ce527e535d185ed4b6f45694",
-                "sha256:e76826342cefe3c3d5f7e8ee4316b80d1dd8a300781612ddbc765c17ba25a6c6"
-            ],
-            "version": "==1.7.0"
-        },
         "pycodestyle": {
             "hashes": [
                 "sha256:95a2219d12372f05704562a14ec30bc76b05a5b297b21a5dfe3f6fac3491ae56",
@@ -158,26 +122,10 @@
         },
         "pyflakes": {
             "hashes": [
-                "sha256:5e8c00e30c464c99e0b501dc160b13a14af7f27d4dffb529c556e30a159e231d",
-                "sha256:f277f9ca3e55de669fba45b7393a1449009cff5a37d1af10ebb76c52765269cd"
+                "sha256:17dbeb2e3f4d772725c777fabc446d5634d1038f234e77343108ce445ea69ce0",
+                "sha256:d976835886f8c5b31d47970ed689944a0262b5f3afa00a5a7b4dc81e5449f8a2"
             ],
-            "version": "==2.1.0"
-        },
-        "pytest": {
-            "hashes": [
-                "sha256:65aeaa77ae87c7fc95de56285282546cfa9c886dc8e5dc78313db1c25e21bc07",
-                "sha256:6ac6d467d9f053e95aaacd79f831dbecfe730f419c6c7022cb316b365cd9199d"
-            ],
-            "index": "pypi",
-            "version": "==4.2.0"
-        },
-        "pytest-django": {
-            "hashes": [
-                "sha256:3d489db7c9bd18d7c154347b1bdfb82cc6b1ec8539543508b199c77e5eb2caec",
-                "sha256:87c31e53ad09ca4f061b82a9d71ad1e3e399c7a5ec9d28f7c3c38a9a9afbd027"
-            ],
-            "index": "pypi",
-            "version": "==3.4.7"
+            "version": "==2.1.1"
         },
         "python-dateutil": {
             "hashes": [
@@ -224,61 +172,27 @@
         }
     },
     "develop": {
-        "astroid": {
+        "atomicwrites": {
             "hashes": [
-                "sha256:35b032003d6a863f5dcd7ec11abd5cd5893428beaa31ab164982403bcb311f22",
-                "sha256:6a5d668d7dc69110de01cdf7aeec69a679ef486862a0850cc0fd5571505b6b7e"
+                "sha256:03472c30eb2c5d1ba9227e4c2ca66ab8287fbfbbda3888aa93dc2e28fc6811b4",
+                "sha256:75a9445bac02d8d058d5e1fe689654ba5a6556a1dfd8ce6ec55a0ed79866cfa6"
             ],
-            "version": "==2.1.0"
+            "version": "==1.3.0"
         },
-        "isort": {
+        "attrs": {
             "hashes": [
-                "sha256:1153601da39a25b14ddc54955dbbacbb6b2d19135386699e2ad58517953b34af",
-                "sha256:b9c40e9750f3d77e6e4d441d8b0266cf555e7cdabdcff33c4fd06366ca761ef8",
-                "sha256:ec9ef8f4a9bc6f71eec99e1806bfa2de401650d996c59330782b89a5555c1497"
+                "sha256:69c0dbf2ed392de1cb5ec704444b08a5ef81680a61cb899dc08127123af36a79",
+                "sha256:f0b870f674851ecbfbbbd364d6b5cbdff9dcedbc7f3f5e18a6891057f21fe399"
             ],
-            "version": "==4.3.4"
+            "version": "==19.1.0"
         },
-        "lazy-object-proxy": {
+        "more-itertools": {
             "hashes": [
-                "sha256:0ce34342b419bd8f018e6666bfef729aec3edf62345a53b537a4dcc115746a33",
-                "sha256:1b668120716eb7ee21d8a38815e5eb3bb8211117d9a90b0f8e21722c0758cc39",
-                "sha256:209615b0fe4624d79e50220ce3310ca1a9445fd8e6d3572a896e7f9146bbf019",
-                "sha256:27bf62cb2b1a2068d443ff7097ee33393f8483b570b475db8ebf7e1cba64f088",
-                "sha256:27ea6fd1c02dcc78172a82fc37fcc0992a94e4cecf53cb6d73f11749825bd98b",
-                "sha256:2c1b21b44ac9beb0fc848d3993924147ba45c4ebc24be19825e57aabbe74a99e",
-                "sha256:2df72ab12046a3496a92476020a1a0abf78b2a7db9ff4dc2036b8dd980203ae6",
-                "sha256:320ffd3de9699d3892048baee45ebfbbf9388a7d65d832d7e580243ade426d2b",
-                "sha256:50e3b9a464d5d08cc5227413db0d1c4707b6172e4d4d915c1c70e4de0bbff1f5",
-                "sha256:5276db7ff62bb7b52f77f1f51ed58850e315154249aceb42e7f4c611f0f847ff",
-                "sha256:61a6cf00dcb1a7f0c773ed4acc509cb636af2d6337a08f362413c76b2b47a8dd",
-                "sha256:6ae6c4cb59f199d8827c5a07546b2ab7e85d262acaccaacd49b62f53f7c456f7",
-                "sha256:7661d401d60d8bf15bb5da39e4dd72f5d764c5aff5a86ef52a042506e3e970ff",
-                "sha256:7bd527f36a605c914efca5d3d014170b2cb184723e423d26b1fb2fd9108e264d",
-                "sha256:7cb54db3535c8686ea12e9535eb087d32421184eacc6939ef15ef50f83a5e7e2",
-                "sha256:7f3a2d740291f7f2c111d86a1c4851b70fb000a6c8883a59660d95ad57b9df35",
-                "sha256:81304b7d8e9c824d058087dcb89144842c8e0dea6d281c031f59f0acf66963d4",
-                "sha256:933947e8b4fbe617a51528b09851685138b49d511af0b6c0da2539115d6d4514",
-                "sha256:94223d7f060301b3a8c09c9b3bc3294b56b2188e7d8179c762a1cda72c979252",
-                "sha256:ab3ca49afcb47058393b0122428358d2fbe0408cf99f1b58b295cfeb4ed39109",
-                "sha256:bd6292f565ca46dee4e737ebcc20742e3b5be2b01556dafe169f6c65d088875f",
-                "sha256:cb924aa3e4a3fb644d0c463cad5bc2572649a6a3f68a7f8e4fbe44aaa6d77e4c",
-                "sha256:d0fc7a286feac9077ec52a927fc9fe8fe2fabab95426722be4c953c9a8bede92",
-                "sha256:ddc34786490a6e4ec0a855d401034cbd1242ef186c20d79d2166d6a4bd449577",
-                "sha256:e34b155e36fa9da7e1b7c738ed7767fc9491a62ec6af70fe9da4a057759edc2d",
-                "sha256:e5b9e8f6bda48460b7b143c3821b21b452cb3a835e6bbd5dd33aa0c8d3f5137d",
-                "sha256:e81ebf6c5ee9684be8f2c87563880f93eedd56dd2b6146d8a725b50b7e5adb0f",
-                "sha256:eb91be369f945f10d3a49f5f9be8b3d0b93a4c2be8f8a5b83b0571b8123e0a7a",
-                "sha256:f460d1ceb0e4a5dcb2a652db0904224f367c9b3c1470d5a7683c0480e582468b"
+                "sha256:0125e8f60e9e031347105eb1682cef932f5e97d7b9a1a28d9bf00c22a5daef40",
+                "sha256:590044e3942351a1bdb1de960b739ff4ce277960f2425ad4509446dbace8d9d1"
             ],
-            "version": "==1.3.1"
-        },
-        "mccabe": {
-            "hashes": [
-                "sha256:ab8a6258860da4b6677da4bd2fe5dc2c659cff31b3ee4f7f5d64e79735b80d42",
-                "sha256:dd8d182285a0fe56bace7f45b5e7d1a6ebcbf524e8f3bd87eb0f125271b8831f"
-            ],
-            "version": "==0.6.1"
+            "markers": "python_version > '2.7'",
+            "version": "==6.0.0"
         },
         "mypy": {
             "hashes": [
@@ -295,13 +209,35 @@
             ],
             "version": "==0.4.1"
         },
-        "pylint": {
+        "pluggy": {
             "hashes": [
-                "sha256:689de29ae747642ab230c6d37be2b969bf75663176658851f456619aacf27492",
-                "sha256:771467c434d0d9f081741fec1d64dfb011ed26e65e12a28fe06ca2f61c4d556c"
+                "sha256:19ecf9ce9db2fce065a7a0586e07cfb4ac8614fe96edf628a264b1c70116cf8f",
+                "sha256:84d306a647cc805219916e62aab89caa97a33a1dd8c342e87a37f91073cd4746"
+            ],
+            "version": "==0.9.0"
+        },
+        "py": {
+            "hashes": [
+                "sha256:64f65755aee5b381cea27766a3a147c3f15b9b6b9ac88676de66ba2ae36793fa",
+                "sha256:dc639b046a6e2cff5bbe40194ad65936d6ba360b52b3c3fe1d08a82dd50b5e53"
+            ],
+            "version": "==1.8.0"
+        },
+        "pytest": {
+            "hashes": [
+                "sha256:067a1d4bf827ffdd56ad21bd46674703fce77c5957f6c1eef731f6146bfcef1c",
+                "sha256:9687049d53695ad45cf5fdc7bbd51f0c49f1ea3ecfc4b7f3fde7501b541f17f4"
             ],
             "index": "pypi",
-            "version": "==2.2.2"
+            "version": "==4.3.0"
+        },
+        "pytest-django": {
+            "hashes": [
+                "sha256:30d773f1768e8f214a3106f1090e00300ce6edfcac8c55fd13b675fe1cbd1c85",
+                "sha256:4d3283e774fe1d40630ee58bf34929b83875e4751b525eeb07a7506996eb42ee"
+            ],
+            "index": "pypi",
+            "version": "==3.4.8"
         },
         "six": {
             "hashes": [
@@ -332,14 +268,7 @@
                 "sha256:d659517ca116e6750101a1326107d3479028c5191f0ecee3c7203c50f5b915b0",
                 "sha256:eddd3fb1f3e0f82e5915a899285a39ee34ce18fd25d89582bc89fc9fb16cd2c6"
             ],
-            "markers": "python_version < '3.7' and implementation_name == 'cpython'",
             "version": "==1.3.1"
-        },
-        "wrapt": {
-            "hashes": [
-                "sha256:4aea003270831cceb8a90ff27c4031da6ead7ec1886023b80ce0dfe0adf61533"
-            ],
-            "version": "==1.11.1"
         }
     }
 }
diff --git a/README.md b/README.md
index 5c15123..fabdbb5 100644
--- a/README.md
+++ b/README.md
@@ -168,6 +168,8 @@ The previous `tox` system was removed with the v2 release, since we no longer ai
 
 # Version History
 
+**2.2.2** Update dependencies
+
 **2.2.1** Convert task delete and toggle_done views to POST only
 
 **2.2.0** Re-instate enforcement of TODO_STAFF_ONLY setting
diff --git a/todo/__init__.py b/todo/__init__.py
index cfae594..71f82f5 100644
--- a/todo/__init__.py
+++ b/todo/__init__.py
@@ -1,7 +1,7 @@
 """
 A multi-user, multi-group task management and assignment system for Django.
 """
-__version__ = '2.2.1'
+__version__ = '2.2.2'
 
 __author__ = 'Scot Hacker'
 __email__ = 'shacker@birdhouse.org'