diff --git a/backend/Pipfile.lock b/backend/Pipfile.lock
index 03f847a..9c65bae 100644
--- a/backend/Pipfile.lock
+++ b/backend/Pipfile.lock
@@ -98,39 +98,44 @@
         },
         "pillow": {
             "hashes": [
-                "sha256:00def5b638994f888d1058e4d17c86dec8e1113c3741a0a8a659039aec59a83a",
-                "sha256:026449b64e559226cdb8e6d8c931b5965d8fc90ec18ebbb0baa04c5b36503c72",
-                "sha256:03dbb224ee196ef30ed2156d41b579143e1efeb422974719a5392fc035e4f574",
-                "sha256:03eb0e04f929c102ae24bc436bf1c0c60a4e63b07ebd388e84d8b219df3e6acd",
-                "sha256:1be66b9a89e367e7d20d6cae419794997921fe105090fafd86ef39e20a3baab2",
-                "sha256:1e977a3ed998a599bda5021fb2c2889060617627d3ae228297a529a082a3cd5c",
-                "sha256:22cf3406d135cfcc13ec6228ade774c8461e125c940e80455f500638429be273",
-                "sha256:24adccf1e834f82718c7fc8e3ec1093738da95144b8b1e44c99d5fc7d3e9c554",
-                "sha256:2a3e362c97a5e6a259ee9cd66553292a1f8928a5bdfa3622fdb1501570834612",
-                "sha256:3832e26ecbc9d8a500821e3a1d3765bda99d04ae29ffbb2efba49f5f788dc934",
-                "sha256:4fd1f0c2dc02aaec729d91c92cd85a2df0289d88e9f68d1e8faba750bb9c4786",
-                "sha256:4fda62030f2c515b6e2e673c57caa55cb04026a81968f3128aae10fc28e5cc27",
-                "sha256:5044d75a68b49ce36a813c82d8201384207112d5d81643937fc758c05302f05b",
-                "sha256:522184556921512ec484cb93bd84e0bab915d0ac5a372d49571c241a7f73db62",
-                "sha256:5914cff11f3e920626da48e564be6818831713a3087586302444b9c70e8552d9",
-                "sha256:6661a7908d68c4a133e03dac8178287aa20a99f841ea90beeb98a233ae3fd710",
-                "sha256:79258a8df3e309a54c7ef2ef4a59bb8e28f7e4a8992a3ad17c24b1889ced44f3",
-                "sha256:7d74c20b8f1c3e99d3f781d3b8ff5abfefdd7363d61e23bdeba9992ff32cc4b4",
-                "sha256:81918afeafc16ba5d9d0d4e9445905f21aac969a4ebb6f2bff4b9886da100f4b",
-                "sha256:8194d913ca1f459377c8a4ed8f9b7ad750068b8e0e3f3f9c6963fcc87a84515f",
-                "sha256:84d5d31200b11b3c76fab853b89ac898bf2d05c8b3da07c1fcc23feb06359d6e",
-                "sha256:989981db57abffb52026b114c9a1f114c7142860a6d30a352d28f8cbf186500b",
-                "sha256:a3d7511d3fad1618a82299aab71a5fceee5c015653a77ffea75ced9ef917e71a",
-                "sha256:b3ef168d4d6fd4fa6685aef7c91400f59f7ab1c0da734541f7031699741fb23f",
-                "sha256:c1c5792b6e74bbf2af0f8e892272c2a6c48efa895903211f11b8342e03129fea",
-                "sha256:c5dcb5a56aebb8a8f2585042b2f5c496d7624f0bcfe248f0cc33ceb2fd8d39e7",
-                "sha256:e2bed4a04e2ca1050bb5f00865cf2f83c0b92fd62454d9244f690fcd842e27a4",
-                "sha256:e87a527c06319428007e8c30511e1f0ce035cb7f14bb4793b003ed532c3b9333",
-                "sha256:f63e420180cbe22ff6e32558b612e75f50616fc111c5e095a4631946c782e109",
-                "sha256:f8b3d413c5a8f84b12cd4c5df1d8e211777c9852c6be3ee9c094b626644d3eab"
-            ],
-            "index": "pypi",
-            "version": "==5.2.0"
+                "sha256:011233e0c42a4a7836498e98c1acf5e744c96a67dd5032a6f666cc1fb97eab97",
+                "sha256:0f29d831e2151e0b7b39981756d201f7108d3d215896212ffe2e992d06bfe049",
+                "sha256:12875d118f21cf35604176872447cdb57b07126750a33748bac15e77f90f1f9c",
+                "sha256:14d4b1341ac07ae07eb2cc682f459bec932a380c3b122f5540432d8977e64eae",
+                "sha256:1c3c33ac69cf059bbb9d1a71eeaba76781b450bc307e2291f8a4764d779a6b28",
+                "sha256:1d19397351f73a88904ad1aee421e800fe4bbcd1aeee6435fb62d0a05ccd1030",
+                "sha256:253e8a302a96df6927310a9d44e6103055e8fb96a6822f8b7f514bb7ef77de56",
+                "sha256:2632d0f846b7c7600edf53c48f8f9f1e13e62f66a6dbc15191029d950bfed976",
+                "sha256:335ace1a22325395c4ea88e00ba3dc89ca029bd66bd5a3c382d53e44f0ccd77e",
+                "sha256:413ce0bbf9fc6278b2d63309dfeefe452835e1c78398efb431bab0672fe9274e",
+                "sha256:5100b45a4638e3c00e4d2320d3193bdabb2d75e79793af7c3eb139e4f569f16f",
+                "sha256:514ceac913076feefbeaf89771fd6febde78b0c4c1b23aaeab082c41c694e81b",
+                "sha256:528a2a692c65dd5cafc130de286030af251d2ee0483a5bf50c9348aefe834e8a",
+                "sha256:6295f6763749b89c994fcb6d8a7f7ce03c3992e695f89f00b741b4580b199b7e",
+                "sha256:6c8bc8238a7dfdaf7a75f5ec5a663f4173f8c367e5a39f87e720495e1eed75fa",
+                "sha256:718856856ba31f14f13ba885ff13874be7fefc53984d2832458f12c38205f7f7",
+                "sha256:7f7609a718b177bf171ac93cea9fd2ddc0e03e84d8fa4e887bdfc39671d46b00",
+                "sha256:80ca33961ced9c63358056bd08403ff866512038883e74f3a4bf88ad3eb66838",
+                "sha256:80fe64a6deb6fcfdf7b8386f2cf216d329be6f2781f7d90304351811fb591360",
+                "sha256:81c4b81611e3a3cb30e59b0cf05b888c675f97e3adb2c8672c3154047980726b",
+                "sha256:855c583f268edde09474b081e3ddcd5cf3b20c12f26e0d434e1386cc5d318e7a",
+                "sha256:9bfdb82cdfeccec50aad441afc332faf8606dfa5e8efd18a6692b5d6e79f00fd",
+                "sha256:a5d24e1d674dd9d72c66ad3ea9131322819ff86250b30dc5821cbafcfa0b96b4",
+                "sha256:a9f44cd7e162ac6191491d7249cceb02b8116b0f7e847ee33f739d7cb1ea1f70",
+                "sha256:b5b3f092fe345c03bca1e0b687dfbb39364b21ebb8ba90e3fa707374b7915204",
+                "sha256:b9618823bd237c0d2575283f2939655f54d51b4527ec3972907a927acbcc5bfc",
+                "sha256:cef9c85ccbe9bee00909758936ea841ef12035296c748aaceee535969e27d31b",
+                "sha256:d21237d0cd37acded35154e29aec853e945950321dd2ffd1a7d86fe686814669",
+                "sha256:d3c5c79ab7dfce6d88f1ba639b77e77a17ea33a01b07b99840d6ed08031cb2a7",
+                "sha256:d9d7942b624b04b895cb95af03a23407f17646815495ce4547f0e60e0b06f58e",
+                "sha256:db6d9fac65bd08cea7f3540b899977c6dee9edad959fa4eaf305940d9cbd861c",
+                "sha256:ede5af4a2702444a832a800b8eb7f0a7a1c0eed55b644642e049c98d589e5092",
+                "sha256:effb7749713d5317478bb3acb3f81d9d7c7f86726d41c1facca068a04cf5bb4c",
+                "sha256:f154d173286a5d1863637a7dcd8c3437bb557520b01bddb0be0258dcb72696b5",
+                "sha256:f25ed6e28ddf50de7e7ea99d7a976d6a9c415f03adcaac9c41ff6ff41b6d86ac"
+            ],
+            "index": "pypi",
+            "version": "==9.0.1"
         },
         "psycopg2-binary": {
             "hashes": [
@@ -170,10 +175,10 @@
         },
         "pyjwt": {
             "hashes": [
-                "sha256:30b1380ff43b55441283cc2b2676b755cca45693ae3097325dea01f3d110628c",
-                "sha256:4ee413b357d53fd3fb44704577afac88e72e878716116270d722723d65b42176"
+                "sha256:5c6eca3c2940464d106b99ba83b00c6add741c9becaec087fb7ccdefea71350e",
+                "sha256:8d59a976fb773f3e6a39c85636357c4f0e242707394cadadd9814f5cbaa20e96"
             ],
-            "version": "==1.6.4"
+            "version": "==1.7.1"
         },
         "python-decouple": {
             "hashes": [
@@ -185,7 +190,14 @@
         "pytz": {
             "hashes": [
                 "sha256:07edfc3d4d2705a20a6e99d97f0c4b61c800b8232dc1c04d87e8554f130148dd",
-                "sha256:410bcd1d6409026fbaa65d9ed33bf6dd8b1e94a499e32168acfc7b332e4095c0"
+                "sha256:3a47ff71597f821cd84a162e71593004286e5be07a340fd462f0d33a760782b5",
+                "sha256:410bcd1d6409026fbaa65d9ed33bf6dd8b1e94a499e32168acfc7b332e4095c0",
+                "sha256:5bd55c744e6feaa4d599a6cbd8228b4f8f9ba96de2c38d56f08e534b3c9edf0d",
+                "sha256:61242a9abc626379574a166dc0e96a66cd7c3b27fc10868003fa210be4bff1c9",
+                "sha256:887ab5e5b32e4d0c86efddd3d055c1f363cbaa583beb8da5e22d2fa2f64d51ef",
+                "sha256:ba18e6a243b3625513d85239b3e49055a2f0318466e0b8a92b8fb8ca7ccdf55f",
+                "sha256:ed6509d9af298b7995d69a440e2822288f2eca1681b8cce37673dbb10091e5fe",
+                "sha256:f93ddcdd6342f94cea379c73cddb5724e0d6d0a1c91c9bdef364dc0368ba4fda"
             ],
             "index": "pypi",
             "version": "==2018.3"