diff --git a/backend/Pipfile b/backend/Pipfile
index 5c2d3550d..e0100809d 100644
--- a/backend/Pipfile
+++ b/backend/Pipfile
@@ -40,6 +40,7 @@ debugpy = "*"
 gunicorn = "*"
 django-admin-autocomplete-filter = "*"
 django-notifications-hq = "*"
+pytz = "*"
 
 [dev-packages]
 yapf = "*"
diff --git a/backend/Pipfile.lock b/backend/Pipfile.lock
index 18fac3912..70041bb59 100644
--- a/backend/Pipfile.lock
+++ b/backend/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "fc3d1fb078ca2215b702cd3692e46a1b725aece789d9b183cb500a40cb21b37c"
+            "sha256": "9151454d819ea46a6228ac9a0f774753c948ad856f7a9c9913fa9c533ca54db1"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -24,45 +24,53 @@
             "markers": "python_version >= '3.7'",
             "version": "==3.7.2"
         },
+        "colorama": {
+            "hashes": [
+                "sha256:08695f5cb7ed6e0531a20572697297273c47b8cae5a63ffc6d6ed5c201be6e44",
+                "sha256:4f1d9991f5acc0ca119f9d443620b77f9d6b33703e51011c16baf57afb285fc6"
+            ],
+            "markers": "sys_platform == 'win32'",
+            "version": "==0.4.6"
+        },
         "dataclasses-json": {
             "hashes": [
-                "sha256:bc285b5f892094c3a53d558858a88553dd6a61a11ab1a8128a0e554385dcc5dd",
-                "sha256:c2c11bc8214fbf709ffc369d11446ff6945254a7f09128154a7620613d8fda90"
+                "sha256:5bcd5c1d946a69ef94d8cbb726d87af1256f7ba0898809c7695d299ab9b45122",
+                "sha256:77cbc80041007c27db90abad79eeed9ea00d4627324b1208266379a6ebdc81e4"
             ],
             "index": "pypi",
-            "version": "==0.5.7"
+            "version": "==0.6.0"
         },
         "debugpy": {
             "hashes": [
-                "sha256:0679b7e1e3523bd7d7869447ec67b59728675aadfc038550a63a362b63029d2c",
-                "sha256:279d64c408c60431c8ee832dfd9ace7c396984fd7341fa3116aee414e7dcd88d",
-                "sha256:33edb4afa85c098c24cc361d72ba7c21bb92f501104514d4ffec1fb36e09c01a",
-                "sha256:38ed626353e7c63f4b11efad659be04c23de2b0d15efff77b60e4740ea685d07",
-                "sha256:5224eabbbeddcf1943d4e2821876f3e5d7d383f27390b82da5d9558fd4eb30a9",
-                "sha256:53f7a456bc50706a0eaabecf2d3ce44c4d5010e46dfc65b6b81a518b42866267",
-                "sha256:9cd10cf338e0907fdcf9eac9087faa30f150ef5445af5a545d307055141dd7a4",
-                "sha256:aaf6da50377ff4056c8ed470da24632b42e4087bc826845daad7af211e00faad",
-                "sha256:b3e7ac809b991006ad7f857f016fa92014445085711ef111fdc3f74f66144096",
-                "sha256:bae1123dff5bfe548ba1683eb972329ba6d646c3a80e6b4c06cd1b1dd0205e9b",
-                "sha256:c0ff93ae90a03b06d85b2c529eca51ab15457868a377c4cc40a23ab0e4e552a3",
-                "sha256:c4c2f0810fa25323abfdfa36cbbbb24e5c3b1a42cb762782de64439c575d67f2",
-                "sha256:d71b31117779d9a90b745720c0eab54ae1da76d5b38c8026c654f4a066b0130a",
-                "sha256:dbe04e7568aa69361a5b4c47b4493d5680bfa3a911d1e105fbea1b1f23f3eb45",
-                "sha256:de86029696e1b3b4d0d49076b9eba606c226e33ae312a57a46dca14ff370894d",
-                "sha256:e3876611d114a18aafef6383695dfc3f1217c98a9168c1aaf1a02b01ec7d8d1e",
-                "sha256:ed6d5413474e209ba50b1a75b2d9eecf64d41e6e4501977991cdc755dc83ab0f",
-                "sha256:f90a2d4ad9a035cee7331c06a4cf2245e38bd7c89554fe3b616d90ab8aab89cc"
+                "sha256:125b9a637e013f9faac0a3d6a82bd17c8b5d2c875fb6b7e2772c5aba6d082332",
+                "sha256:12af2c55b419521e33d5fb21bd022df0b5eb267c3e178f1d374a63a2a6bdccd0",
+                "sha256:3c6fb41c98ec51dd010d7ed650accfd07a87fe5e93eca9d5f584d0578f28f35f",
+                "sha256:46ab6780159eeabb43c1495d9c84cf85d62975e48b6ec21ee10c95767c0590aa",
+                "sha256:57161629133113c97b387382045649a2b985a348f0c9366e22217c87b68b73c6",
+                "sha256:5d9de202f5d42e62f932507ee8b21e30d49aae7e46d5b1dd5c908db1d7068637",
+                "sha256:60009b132c91951354f54363f8ebdf7457aeb150e84abba5ae251b8e9f29a8a6",
+                "sha256:61eab4a4c8b6125d41a34bad4e5fe3d2cc145caecd63c3fe953be4cc53e65bf8",
+                "sha256:7fb95ca78f7ac43393cd0e0f2b6deda438ec7c5e47fa5d38553340897d2fbdfb",
+                "sha256:8cd0197141eb9e8a4566794550cfdcdb8b3db0818bdf8c49a8e8f8053e56e38b",
+                "sha256:9c9b0ac1ce2a42888199df1a1906e45e6f3c9555497643a85e0bf2406e3ffbc4",
+                "sha256:a64093656c4c64dc6a438e11d59369875d200bd5abb8f9b26c1f5f723622e153",
+                "sha256:a8b7a2fd27cd9f3553ac112f356ad4ca93338feadd8910277aff71ab24d8775f",
+                "sha256:b05a6b503ed520ad58c8dc682749113d2fd9f41ffd45daec16e558ca884008cd",
+                "sha256:bdc5ef99d14b9c0fcb35351b4fbfc06ac0ee576aeab6b2511702e5a648a2e595",
+                "sha256:e3412f9faa9ade82aa64a50b602544efcba848c91384e9f93497a458767e6926",
+                "sha256:ef54404365fae8d45cf450d0544ee40cefbcb9cb85ea7afe89a963c27028261e",
+                "sha256:ef9ab7df0b9a42ed9c878afd3eaaff471fce3fa73df96022e1f5c9f8f8c87ada"
             ],
             "index": "pypi",
-            "version": "==1.6.7"
+            "version": "==1.8.0"
         },
         "django": {
             "hashes": [
-                "sha256:45a747e1c5b3d6df1b141b1481e193b033fd1fdbda3ff52677dc81afdaacbaed",
-                "sha256:f7c7852a5ac5a3da5a8d5b35cc6168f31b605971441798dac845f17ca8028039"
+                "sha256:5e5c1c9548ffb7796b4a8a4782e9a2e5a3df3615259fc1bfd3ebc73b646146c1",
+                "sha256:b6b2b5cae821077f137dc4dade696a1c2aa292f892eca28fa8d7bfdf2608ddd4"
             ],
             "index": "pypi",
-            "version": "==4.2.3"
+            "version": "==4.2.5"
         },
         "django-admin-autocomplete-filter": {
             "hashes": [
@@ -74,27 +82,27 @@
         },
         "django-cors-headers": {
             "hashes": [
-                "sha256:a971cd4c75b29974068cc36b5c595698822f1e0edd5f1b32ea42ea37326ad4aa",
-                "sha256:e3cbd247a1a835da4cf71a70d4214378813ea7e08337778b82cb2c1bc19d28d6"
+                "sha256:9ada212b0e2efd4a5e339360ffc869cb21ac5605e810afe69f7308e577ea5bde",
+                "sha256:f9749c6410fe738278bc2b6ef17f05195bc7b251693c035752d8257026af024f"
             ],
             "index": "pypi",
-            "version": "==4.0.0"
+            "version": "==4.2.0"
         },
         "django-environ": {
             "hashes": [
-                "sha256:510f8c9c1d0a38b0815f91504270c29440a0cf44fab07f55942fa8d31bbb9be6",
-                "sha256:b3559a91439c9d774a9e0c1ced872364772c612cdf6dc919506a2b13f7a77225"
+                "sha256:0ff95ab4344bfeff693836aa978e6840abef2e2f1145adff7735892711590c05",
+                "sha256:f32a87aa0899894c27d4e1776fa6b477e8164ed7f6b3e410a62a6d72caaf64be"
             ],
             "index": "pypi",
-            "version": "==0.10.0"
+            "version": "==0.11.2"
         },
         "django-extensions": {
             "hashes": [
-                "sha256:2a4f4d757be2563cd1ff7cfdf2e57468f5f931cc88b23cf82ca75717aae504a4",
-                "sha256:421464be390289513f86cb5e18eb43e5dc1de8b4c27ba9faa3b91261b0d67e09"
+                "sha256:44d27919d04e23b3f40231c4ab7af4e61ce832ef46d610cc650d53e68328410a",
+                "sha256:9600b7562f79a92cbf1fde6403c04fee314608fefbb595502e34383ae8203401"
             ],
             "index": "pypi",
-            "version": "==3.2.1"
+            "version": "==3.2.3"
         },
         "django-guardian": {
             "hashes": [
@@ -114,11 +122,11 @@
         },
         "django-notifications-hq": {
             "hashes": [
-                "sha256:1ff90fbddb0a9dba3fdc57758e799b755c8844f673cd92e9ffaa64cedd33d5f5",
-                "sha256:5540a99681c0e73399726d662ab74f23c45ba385036431ecd75ffc962f02c793"
+                "sha256:c3ca2fa300d438587882ff47a8ccefdde3c28d3f9103f482a692cfba21fb2c01",
+                "sha256:c7f0294d70be101a1291fdc69c86291ecd7be68ff95db0eb5f350b314bea3921"
             ],
             "index": "pypi",
-            "version": "==1.7.0"
+            "version": "==1.8.2"
         },
         "djangorestframework": {
             "hashes": [
@@ -130,11 +138,11 @@
         },
         "gunicorn": {
             "hashes": [
-                "sha256:9dcc4547dbb1cb284accfb15ab5667a0e5d1881cc443e0677b4882a4067a807e",
-                "sha256:e0a968b5ba15f8a328fdfd7ab1fcb5af4470c28aaf7e55df02a99bc13138e6e8"
+                "sha256:3213aa5e8c24949e792bcacfc176fef362e7aac80b76c56f6b5122bf350722f0",
+                "sha256:88ec8bff1d634f98e61b9f65bc4bf3cd918a90806c6f5c48bc5603849ec81033"
             ],
             "index": "pypi",
-            "version": "==20.1.0"
+            "version": "==21.2.0"
         },
         "iniconfig": {
             "hashes": [
@@ -160,13 +168,6 @@
             "markers": "python_version >= '3.8'",
             "version": "==3.20.1"
         },
-        "marshmallow-enum": {
-            "hashes": [
-                "sha256:38e697e11f45a8e64b4a1e664000897c659b60aa57bfa18d44e226a9920b6e58",
-                "sha256:57161ab3dbfde4f57adeb12090f39592e992b9c86d206d02f6bd03ebec60f072"
-            ],
-            "version": "==1.5.1"
-        },
         "mypy-extensions": {
             "hashes": [
                 "sha256:4392f6c0eb8a5668a69e23d168ffa70f0be9ccfd32b5cc2d26a34ae5b844552d",
@@ -185,75 +186,63 @@
         },
         "pillow": {
             "hashes": [
-                "sha256:07999f5834bdc404c442146942a2ecadd1cb6292f5229f4ed3b31e0a108746b1",
-                "sha256:0852ddb76d85f127c135b6dd1f0bb88dbb9ee990d2cd9aa9e28526c93e794fba",
-                "sha256:1781a624c229cb35a2ac31cc4a77e28cafc8900733a864870c49bfeedacd106a",
-                "sha256:1e7723bd90ef94eda669a3c2c19d549874dd5badaeefabefd26053304abe5799",
-                "sha256:229e2c79c00e85989a34b5981a2b67aa079fd08c903f0aaead522a1d68d79e51",
-                "sha256:22baf0c3cf0c7f26e82d6e1adf118027afb325e703922c8dfc1d5d0156bb2eeb",
-                "sha256:252a03f1bdddce077eff2354c3861bf437c892fb1832f75ce813ee94347aa9b5",
-                "sha256:2dfaaf10b6172697b9bceb9a3bd7b951819d1ca339a5ef294d1f1ac6d7f63270",
-                "sha256:322724c0032af6692456cd6ed554bb85f8149214d97398bb80613b04e33769f6",
-                "sha256:35f6e77122a0c0762268216315bf239cf52b88865bba522999dc38f1c52b9b47",
-                "sha256:375f6e5ee9620a271acb6820b3d1e94ffa8e741c0601db4c0c4d3cb0a9c224bf",
-                "sha256:3ded42b9ad70e5f1754fb7c2e2d6465a9c842e41d178f262e08b8c85ed8a1d8e",
-                "sha256:432b975c009cf649420615388561c0ce7cc31ce9b2e374db659ee4f7d57a1f8b",
-                "sha256:482877592e927fd263028c105b36272398e3e1be3269efda09f6ba21fd83ec66",
-                "sha256:489f8389261e5ed43ac8ff7b453162af39c3e8abd730af8363587ba64bb2e865",
-                "sha256:54f7102ad31a3de5666827526e248c3530b3a33539dbda27c6843d19d72644ec",
-                "sha256:560737e70cb9c6255d6dcba3de6578a9e2ec4b573659943a5e7e4af13f298f5c",
-                "sha256:5671583eab84af046a397d6d0ba25343c00cd50bce03787948e0fff01d4fd9b1",
-                "sha256:5ba1b81ee69573fe7124881762bb4cd2e4b6ed9dd28c9c60a632902fe8db8b38",
-                "sha256:5d4ebf8e1db4441a55c509c4baa7a0587a0210f7cd25fcfe74dbbce7a4bd1906",
-                "sha256:60037a8db8750e474af7ffc9faa9b5859e6c6d0a50e55c45576bf28be7419705",
-                "sha256:608488bdcbdb4ba7837461442b90ea6f3079397ddc968c31265c1e056964f1ef",
-                "sha256:6608ff3bf781eee0cd14d0901a2b9cc3d3834516532e3bd673a0a204dc8615fc",
-                "sha256:662da1f3f89a302cc22faa9f14a262c2e3951f9dbc9617609a47521c69dd9f8f",
-                "sha256:7002d0797a3e4193c7cdee3198d7c14f92c0836d6b4a3f3046a64bd1ce8df2bf",
-                "sha256:763782b2e03e45e2c77d7779875f4432e25121ef002a41829d8868700d119392",
-                "sha256:77165c4a5e7d5a284f10a6efaa39a0ae8ba839da344f20b111d62cc932fa4e5d",
-                "sha256:7c9af5a3b406a50e313467e3565fc99929717f780164fe6fbb7704edba0cebbe",
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-                "sha256:fbd359831c1657d69bb81f0db962905ee05e5e9451913b18b831febfe0519082",
-                "sha256:fe7e1c262d3392afcf5071df9afa574544f28eac825284596ac6db56e6d11062",
-                "sha256:fed1e1cf6a42577953abbe8e6cf2fe2f566daebde7c34724ec8803c4c0cda579"
+                "sha256:0462b1496505a3462d0f35dc1c4d7b54069747d65d00ef48e736acda2c8cbdff",
+                "sha256:186f7e04248103482ea6354af6d5bcedb62941ee08f7f788a1c7707bc720c66f",
+                "sha256:19e9adb3f22d4c416e7cd79b01375b17159d6990003633ff1d8377e21b7f1b21",
+                "sha256:28444cb6ad49726127d6b340217f0627abc8732f1194fd5352dec5e6a0105635",
+                "sha256:2872f2d7846cf39b3dbff64bc1104cc48c76145854256451d33c5faa55c04d1a",
+                "sha256:2cc6b86ece42a11f16f55fe8903595eff2b25e0358dec635d0a701ac9586588f",
+                "sha256:2d7e91b4379f7a76b31c2dda84ab9e20c6220488e50f7822e59dac36b0cd92b1",
+                "sha256:2fa6dd2661838c66f1a5473f3b49ab610c98a128fc08afbe81b91a1f0bf8c51d",
+                "sha256:32bec7423cdf25c9038fef614a853c9d25c07590e1a870ed471f47fb80b244db",
+                "sha256:3855447d98cced8670aaa63683808df905e956f00348732448b5a6df67ee5849",
+                "sha256:3a04359f308ebee571a3127fdb1bd01f88ba6f6fb6d087f8dd2e0d9bff43f2a7",
+                "sha256:3a0d3e54ab1df9df51b914b2233cf779a5a10dfd1ce339d0421748232cea9876",
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-            "version": "==9.5.0"
+            "version": "==10.0.1"
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         "pluggy": {
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@@ -265,11 +254,11 @@
         },
         "pytest": {
             "hashes": [
-                "sha256:3799fa815351fea3a5e96ac7e503a96fa51cc9942c3753cda7651b93c1cfa362",
-                "sha256:434afafd78b1d78ed0addf160ad2b77a30d35d4bdf8af234fe621919d9ed15e3"
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-            "version": "==7.3.1"
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@@ -284,16 +273,9 @@
                 "sha256:7b4fddbeb94a1eba4b557da24f19fdf9db575192544270a9101d8509f9f43d7b",
                 "sha256:ce42d816b81b68506614c11e8937d3aa9e41007ceb50bfdcb0749b921bf646c7"
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@@ -311,11 +293,11 @@
         },
         "typing-extensions": {
             "hashes": [
-                "sha256:440d5dd3af93b060174bf433bccd69b0babc3b15b1a8dca43789fd7f61514b36",
-                "sha256:b75ddc264f0ba5615db7ba217daeb99701ad295353c45f9e95963337ceeeffb2"
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-            "markers": "python_version >= '3.7'",
-            "version": "==4.7.1"
+            "markers": "python_version >= '3.8'",
+            "version": "==4.8.0"
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         "typing-inspect": {
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@@ -323,6 +305,14 @@
                 "sha256:b23fc42ff6f6ef6954e4852c1fb512cdd18dbea03134f91f856a95ccc9461f78"
             ],
             "version": "==0.9.0"
+        },
+        "tzdata": {
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+                "sha256:7e65763eef3120314099b6939b5546db7adce1e7d6f2e179e3df563c70511eda"
+            ],
+            "markers": "sys_platform == 'win32'",
+            "version": "==2023.3"
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     "develop": {
@@ -428,9 +418,17 @@
                 "sha256:f779d3ad205f108d14e99bb3859aa7dd8e9c68874617c72354d7ecaec2a054ac",
                 "sha256:f87f746ee241d30d6ed93969de31e5ffd09a2961a051e60ae6bddde9ec3583aa"
             ],
-            "markers": "python_version >= '3.7'",
+            "markers": "python_full_version >= '3.7.0'",
             "version": "==3.2.0"
         },
+        "colorama": {
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@@ -480,11 +478,11 @@
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-            "version": "==3.1.34"
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@@ -494,6 +492,14 @@
             "markers": "python_version >= '3.5'",
             "version": "==3.4"
         },
+        "importlib-metadata": {
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@@ -520,35 +526,36 @@
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@@ -568,75 +575,71 @@
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+                "sha256:ca26ba5767888c84bf5a0c1a32f069e8204ce8c21d00a49c90dabeba00ce0145",
+                "sha256:cbe68deb8580462ca0d9eb56a81912f59eb4542e1ef8f987405e35a0179f4ea2",
+                "sha256:d6caf3cd38449ec3cd8a68b375e0c6fe4b6fd04edb6c9766b55ef84a6e8ddf2d",
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+                "sha256:d889b53ae2f030f756e61a7bff13684dcd77e9af8b10c6048fb2c559d6ed6eaf",
+                "sha256:de596695a75496deb3b499c8c4f8e60376e0516e1a774e7bc046f0f48cd620ad",
+                "sha256:e6a90167bcca1216606223a05e2cf991bb25b14695c518bc65639463d7db722d",
+                "sha256:ed2d9c0704f2dc4fa980b99d565c0c9a543fe5101c25b3d60488b8ba80f0cce1",
+                "sha256:ee7810cf7c83fa227ba9125de6084e5e8b08c59038a7b2c9045ef4dde61663b4",
+                "sha256:f0b4b06da13275bc02adfeb82643c4a6385bd08d26f03068c2796f60d125f6f2",
+                "sha256:f11c9102c56ffb9ca87134bd025a43d2aba3f1155f508eff88f694b33a9c6d19",
+                "sha256:f5bb289bb835f9fe1a1e9300d011eef4d69661bb9b34d5e196e5e82c4cb09b37",
+                "sha256:f6d3d4c905e26354e8f9d82548475c46d8e0889538cb0657aa9c6f0872a37aa4",
+                "sha256:fcb59711009b0168d6ee0bd8fb5eb259c4ab1717b2f538bbf36bacf207ef7a68",
+                "sha256:fd2a5403a75b54661182b75ec6132437a181209b901446ee5724b589af8edef1"
             ],
             "index": "pypi",
-            "version": "==9.5.0"
+            "version": "==10.0.1"
+        },
+        "platformdirs": {
+            "hashes": [
+                "sha256:b45696dab2d7cc691a3226759c0d3b00c47c8b6e293d96f6436f733303f77f6d",
+                "sha256:d7c24979f292f916dc9cbf8648319032f551ea8c49a4c9bf2fb556a02070ec1d"
+            ],
+            "markers": "python_version >= '3.7'",
+            "version": "==3.10.0"
         },
         "pycodestyle": {
             "hashes": [
@@ -728,27 +731,27 @@
         },
         "rich": {
             "hashes": [
-                "sha256:146a90b3b6b47cac4a73c12866a499e9817426423f57c5a66949c086191a8808",
-                "sha256:fb9d6c0a0f643c99eed3875b5377a184132ba9be4d61516a55273d3554d75a39"
+                "sha256:87b43e0543149efa1253f485cd845bb7ee54df16c9617b8a893650ab84b4acb6",
+                "sha256:9257b468badc3d347e146a4faa268ff229039d4c2d176ab0cffb4c4fbc73d5d9"
             ],
-            "markers": "python_version >= '3.7'",
-            "version": "==13.5.2"
+            "markers": "python_full_version >= '3.7.0'",
+            "version": "==13.5.3"
         },
         "setuptools": {
             "hashes": [
-                "sha256:3d4dfa6d95f1b101d695a6160a7626e15583af71a5f52176efa5d39a054d475d",
-                "sha256:3d8083eed2d13afc9426f227b24fd1659489ec107c0e86cec2ffdde5c92e790b"
+                "sha256:4ac1475276d2f1c48684874089fefcd83bd7162ddaafb81fac866ba0db282a87",
+                "sha256:b454a35605876da60632df1a60f736524eb73cc47bbc9f3f1ef1b644de74fd2a"
             ],
             "markers": "python_version >= '3.8'",
-            "version": "==68.1.2"
+            "version": "==68.2.2"
         },
         "smmap": {
             "hashes": [
-                "sha256:2aba19d6a040e78d8b09de5c57e96207b09ed71d8e55ce0959eeee6c8e190d94",
-                "sha256:c840e62059cd3be204b0c9c9f74be2c09d5648eddd4580d9314c3ecde0b30936"
+                "sha256:dceeb6c0028fdb6734471eb07c0cd2aae706ccaecab45965ee83f11c8d3b1f62",
+                "sha256:e6d8668fa5f93e706934a62d7b4db19c8d9eb8cf2adbb75ef1b675aa332b69da"
             ],
-            "markers": "python_version >= '3.6'",
-            "version": "==5.0.0"
+            "markers": "python_version >= '3.7'",
+            "version": "==5.0.1"
         },
         "stevedore": {
             "hashes": [
@@ -768,27 +771,35 @@
         },
         "typing-extensions": {
             "hashes": [
-                "sha256:440d5dd3af93b060174bf433bccd69b0babc3b15b1a8dca43789fd7f61514b36",
-                "sha256:b75ddc264f0ba5615db7ba217daeb99701ad295353c45f9e95963337ceeeffb2"
+                "sha256:8f92fc8806f9a6b641eaa5318da32b44d401efaac0f6678c9bc448ba3605faa0",
+                "sha256:df8e4339e9cb77357558cbdbceca33c303714cf861d1eef15e1070055ae8b7ef"
             ],
-            "markers": "python_version >= '3.7'",
-            "version": "==4.7.1"
+            "markers": "python_version >= '3.8'",
+            "version": "==4.8.0"
         },
         "urllib3": {
             "hashes": [
-                "sha256:8d22f86aae8ef5e410d4f539fde9ce6b2113a001bb4d189e0aed70642d602b11",
-                "sha256:de7df1803967d2c2a98e4b11bb7d6bd9210474c46e8a0401514e3a42a75ebde4"
+                "sha256:13abf37382ea2ce6fb744d4dad67838eec857c9f4f57009891805e0b5e123594",
+                "sha256:ef16afa8ba34a1f989db38e1dbbe0c302e4289a47856990d0682e374563ce35e"
             ],
             "markers": "python_version >= '3.7'",
-            "version": "==2.0.4"
+            "version": "==2.0.5"
         },
         "yapf": {
             "hashes": [
-                "sha256:4c2b59bd5ffe46f3a7da48df87596877189148226ce267c16e8b44240e51578d",
-                "sha256:da62bdfea3df3673553351e6246abed26d9fe6780e548a5af9e70f6d2b4f5b9a"
+                "sha256:958587eb5c8ec6c860119a9c25d02addf30a44f75aa152a4220d30e56a98037c",
+                "sha256:b8bfc1f280949153e795181768ca14ef43d7312629a06c43e7abd279323af313"
             ],
             "index": "pypi",
-            "version": "==0.33.0"
+            "version": "==0.40.1"
+        },
+        "zipp": {
+            "hashes": [
+                "sha256:0e923e726174922dce09c53c59ad483ff7bbb8e572e00c7f7c46b88556409f31",
+                "sha256:84e64a1c28cf7e91ed2078bb8cc8c259cb19b76942096c8d7b84947690cabaf0"
+            ],
+            "markers": "python_version >= '3.8'",
+            "version": "==3.17.0"
         }
     }
 }
diff --git a/backend/samfundet/migrations/0039_alter_notification_options_and_more.py b/backend/samfundet/migrations/0039_alter_notification_options_and_more.py
new file mode 100644
index 000000000..9cad7a9cc
--- /dev/null
+++ b/backend/samfundet/migrations/0039_alter_notification_options_and_more.py
@@ -0,0 +1,102 @@
+# Generated by Django 4.2.5 on 2023-09-21 17:40
+
+from django.conf import settings
+from django.db import migrations, models
+import django.db.models.deletion
+import django.utils.timezone
+import jsonfield.fields
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('contenttypes', '0002_remove_content_type_name'),
+        ('samfundet', '0038_alter_user_email'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='notification',
+            options={'ordering': ('-timestamp',), 'verbose_name': 'Notification', 'verbose_name_plural': 'Notifications'},
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='action_object_content_type',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='notify_action_object', to='contenttypes.contenttype', verbose_name='action object content type'),
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='action_object_object_id',
+            field=models.CharField(blank=True, max_length=255, null=True, verbose_name='action object object id'),
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='actor_content_type',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='notify_actor', to='contenttypes.contenttype', verbose_name='actor content type'),
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='actor_object_id',
+            field=models.CharField(max_length=255, verbose_name='actor object id'),
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='data',
+            field=jsonfield.fields.JSONField(blank=True, null=True, verbose_name='data'),
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='deleted',
+            field=models.BooleanField(db_index=True, default=False, verbose_name='deleted'),
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='description',
+            field=models.TextField(blank=True, null=True, verbose_name='description'),
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='emailed',
+            field=models.BooleanField(db_index=True, default=False, verbose_name='emailed'),
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='level',
+            field=models.CharField(choices=[('success', 'success'), ('info', 'info'), ('warning', 'warning'), ('error', 'error')], default='info', max_length=20, verbose_name='level'),
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='public',
+            field=models.BooleanField(db_index=True, default=True, verbose_name='public'),
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='recipient',
+            field=models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='notifications', to=settings.AUTH_USER_MODEL, verbose_name='recipient'),
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='target_content_type',
+            field=models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.CASCADE, related_name='notify_target', to='contenttypes.contenttype', verbose_name='target content type'),
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='target_object_id',
+            field=models.CharField(blank=True, max_length=255, null=True, verbose_name='target object id'),
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='timestamp',
+            field=models.DateTimeField(db_index=True, default=django.utils.timezone.now, verbose_name='timestamp'),
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='unread',
+            field=models.BooleanField(db_index=True, default=True, verbose_name='unread'),
+        ),
+        migrations.AlterField(
+            model_name='notification',
+            name='verb',
+            field=models.CharField(max_length=255, verbose_name='verb'),
+        ),
+    ]
diff --git a/backend/samfundet/models/utils/fields.py b/backend/samfundet/models/utils/fields.py
index 7684d1356..c6f2a81d8 100644
--- a/backend/samfundet/models/utils/fields.py
+++ b/backend/samfundet/models/utils/fields.py
@@ -1,6 +1,5 @@
 from django.db import models
 from django.core.validators import RegexValidator
-from rest_framework import serializers
 
 
 class LowerCaseField(models.CharField):
@@ -11,11 +10,11 @@ def to_python(self, value: str) -> str:
 
 class PhoneNumberField(models.CharField):
 
-    def __init__(self, *args, **kwargs):
-        kwargs["max_length"] = 15
+    def __init__(self, *args, **kwargs) -> None:
+        kwargs['max_length'] = 15
         self.validators = [
             RegexValidator(
-                regex='^[\+]?[(]?[0-9]{3}[)]?[-\s\.]?[0-9]{3}[-\s\.]?[0-9]{4,6}$ ',
+                regex=r'^([\+]?[(]?[0-9]{3}[)]?[-\s\.]?)?[0-9]{3}[-\s\.]?[0-9]{4,6}$',
                 message='Enter a valid phonenumber',
             ),
         ]
diff --git a/backend/samfundet/serializers.py b/backend/samfundet/serializers.py
index 7a5c3338a..eee929ac2 100644
--- a/backend/samfundet/serializers.py
+++ b/backend/samfundet/serializers.py
@@ -257,7 +257,7 @@ class RegisterSerializer(serializers.Serializer):
     email = serializers.EmailField(label='Email', write_only=True)
     phone_number = serializers.RegexField(
         label='Phonenumber',
-        regex=r'^[\+]?[(]?[0-9]{3}[)]?[-\s\.]?[0-9]{3}[-\s\.]?[0-9]{4,6}$',
+        regex=r'^([\+]?[(]?[0-9]{3}[)]?[-\s\.]?)?[0-9]{3}[-\s\.]?[0-9]{4,6}$',
         write_only=True,
     )
     firstname = serializers.CharField(label='First name', write_only=True)
diff --git a/backend/samfundet/tests/test_admin.py b/backend/samfundet/tests/test_admin.py
index e576d4b1e..a627ef9ac 100644
--- a/backend/samfundet/tests/test_admin.py
+++ b/backend/samfundet/tests/test_admin.py
@@ -120,8 +120,14 @@ def test_staff_permission_admin_panel(fixture_django_client: Client, fixture_sta
 def test_staff_object_permission_admin_panel(fixture_django_client: Client, fixture_staff: User):
     fixture_django_client.force_login(user=fixture_staff)
 
-    some_user = User.objects.create_user(username='some_user')
-    other_user = User.objects.create_user(username='other_user')
+    some_user = User.objects.create_user(
+        username='some_user',
+        email='some_email@samfundet.no',
+    )
+    other_user = User.objects.create_user(
+        username='other_user',
+        email='other_user@samfundet.no',
+    )
 
     url_some_user = reverse(routes.admin__samfundet_user_change, args=[some_user.id])
     url_other_user = reverse(routes.admin__samfundet_user_change, args=[other_user.id])