diff --git a/backend/Pipfile.lock b/backend/Pipfile.lock
index eb6bb26..1a8e33a 100644
--- a/backend/Pipfile.lock
+++ b/backend/Pipfile.lock
@@ -21,7 +21,6 @@
                 "sha256:d2b5255c7c6349bc1bd1e59e08cd12acbbd63ce649f2588755783aa94dfb6b1a",
                 "sha256:dacca89f4bfadd5de3d7489b7c8a566eee0d3676333fbb50030263894c38c0dc"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'",
             "version": "==7.1.2"
         },
         "fastapi": {
@@ -59,42 +58,40 @@
         },
         "pydantic": {
             "hashes": [
-                "sha256:0a1cdf24e567d42dc762d3fed399bd211a13db2e8462af9dfa93b34c41648efb",
-                "sha256:2007eb062ed0e57875ce8ead12760a6e44bf5836e6a1a7ea81d71eeecf3ede0f",
-                "sha256:20a15a303ce1e4d831b4e79c17a4a29cb6740b12524f5bba3ea363bff65732bc",
-                "sha256:2a6904e9f18dea58f76f16b95cba6a2f20b72d787abd84ecd67ebc526e61dce6",
-                "sha256:3714a4056f5bdbecf3a41e0706ec9b228c9513eee2ad884dc2c568c4dfa540e9",
-                "sha256:473101121b1bd454c8effc9fe66d54812fdc128184d9015c5aaa0d4e58a6d338",
-                "sha256:68dece67bff2b3a5cc188258e46b49f676a722304f1c6148ae08e9291e284d98",
-                "sha256:70f27d2f0268f490fe3de0a9b6fca7b7492b8fd6623f9fecd25b221ebee385e3",
-                "sha256:8433dbb87246c0f562af75d00fa80155b74e4f6924b0db6a2078a3cd2f11c6c4",
-                "sha256:8be325fc9da897029ee48d1b5e40df817d97fe969f3ac3fd2434ba7e198c55d5",
-                "sha256:93b9f265329d9827f39f0fca68f5d72cc8321881cdc519a1304fa73b9f8a75bd",
-                "sha256:9be755919258d5d168aeffbe913ed6e8bd562e018df7724b68cabdee3371e331",
-                "sha256:ab863853cb502480b118187d670f753be65ec144e1654924bec33d63bc8b3ce2",
-                "sha256:b96ce81c4b5ca62ab81181212edfd057beaa41411cd9700fbcb48a6ba6564b4e",
-                "sha256:da8099fca5ee339d5572cfa8af12cf0856ae993406f0b1eb9bb38c8a660e7416",
-                "sha256:e2c753d355126ddd1eefeb167fa61c7037ecd30b98e7ebecdc0d1da463b4ea09",
-                "sha256:f0018613c7a0d19df3240c2a913849786f21b6539b9f23d85ce4067489dfacfa"
-            ],
-            "markers": "python_version >= '3.6'",
-            "version": "==1.5.1"
+                "sha256:1783c1d927f9e1366e0e0609ae324039b2479a1a282a98ed6a6836c9ed02002c",
+                "sha256:2dc946b07cf24bee4737ced0ae77e2ea6bc97489ba5a035b603bd1b40ad81f7e",
+                "sha256:2de562a456c4ecdc80cf1a8c3e70c666625f7d02d89a6174ecf63754c734592e",
+                "sha256:36dbf6f1be212ab37b5fda07667461a9219c956181aa5570a00edfb0acdfe4a1",
+                "sha256:3fa799f3cfff3e5f536cbd389368fc96a44bb30308f258c94ee76b73bd60531d",
+                "sha256:40d765fa2d31d5be8e29c1794657ad46f5ee583a565c83cea56630d3ae5878b9",
+                "sha256:418b84654b60e44c0cdd5384294b0e4bc1ebf42d6e873819424f3b78b8690614",
+                "sha256:4900b8820b687c9a3ed753684337979574df20e6ebe4227381d04b3c3c628f99",
+                "sha256:530d7222a2786a97bc59ee0e0ebbe23728f82974b1f1ad9a11cd966143410633",
+                "sha256:54122a8ed6b75fe1dd80797f8251ad2063ea348a03b77218d73ea9fe19bd4e73",
+                "sha256:6c3f162ba175678218629f446a947e3356415b6b09122dcb364e58c442c645a7",
+                "sha256:b49c86aecde15cde33835d5d6360e55f5e0067bb7143a8303bf03b872935c75b",
+                "sha256:b5b3489cb303d0f41ad4a7390cf606a5f2c7a94dcba20c051cd1c653694cb14d",
+                "sha256:cf3933c98cb5e808b62fae509f74f209730b180b1e3c3954ee3f7949e083a7df",
+                "sha256:eb75dc1809875d5738df14b6566ccf9fd9c0bcde4f36b72870f318f16b9f5c20",
+                "sha256:f769141ab0abfadf3305d4fcf36660e5cf568a666dd3efab7c3d4782f70946b1",
+                "sha256:f8af9b840a9074e08c0e6dc93101de84ba95df89b267bf7151d74c553d66833b"
+            ],
+            "version": "==1.6.1"
         },
         "starlette": {
             "hashes": [
                 "sha256:04fe51d86fd9a594d9b71356ed322ccde5c9b448fc716ac74155e5821a922f8d",
                 "sha256:0fb4b38d22945b46acb880fedee7ee143fd6c0542992501be8c45c0ed737dd1a"
             ],
-            "markers": "python_version >= '3.6'",
             "version": "==0.13.4"
         },
         "uvicorn": {
             "hashes": [
-                "sha256:50577d599775dac2301bac8bd5b540d19a9560144143c5bdab13cba92783b6e7",
-                "sha256:596eaa8645b6dbc24d6610e335f8ddf5f925b4c4b86fdc7146abb0bf0da65d17"
+                "sha256:1d46a22cc55a52f5567e0c66f000ae56f26263e44cef59b7c885bf10f487ce6e",
+                "sha256:b50f7f4c0c499c9b8d0280924cfbd24b90ba02456e3dc80934b9a786a291f09f"
             ],
             "index": "pypi",
-            "version": "==0.11.5"
+            "version": "==0.11.7"
         },
         "uvloop": {
             "hashes": [
@@ -136,7 +133,6 @@
                 "sha256:e898a0863421650f0bebac8ba40840fc02258ef4714cb7e1fd76b6a6354bda36",
                 "sha256:f8a7bff6e8664afc4e6c28b983845c5bc14965030e3fb98789734d416af77c4b"
             ],
-            "markers": "python_full_version >= '3.6.1'",
             "version": "==8.1"
         }
     },
@@ -146,15 +142,14 @@
                 "sha256:08a96c641c3a74e44eb59afb61a24f2cb9f4d7188748e76ba4bb5edfa3cb7d1c",
                 "sha256:f7b7ce16570fe9965acd6d30101a28f62fb4a7f9e926b3bbc9b61f8b04247e72"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==19.3.0"
         },
         "certifi": {
             "hashes": [
-                "sha256:5ad7e9a056d25ffa5082862e36f119f7f7cec6457fa07ee2f8c339814b80c9b1",
-                "sha256:9cd41137dc19af6a5e03b630eefe7d1f458d964d406342dd3edf625839b944cc"
+                "sha256:5930595817496dd21bb8dc35dad090f1c2cd0adfaf21204bf6732ca5d8ee34d3",
+                "sha256:8fc0819f1f30ba15bdb34cceffb9ef04d99f420f68eb75d901e9560b8749fc41"
             ],
-            "version": "==2020.4.5.2"
+            "version": "==2020.6.20"
         },
         "chardet": {
             "hashes": [
@@ -165,18 +160,16 @@
         },
         "idna": {
             "hashes": [
-                "sha256:7588d1c14ae4c77d74036e8c22ff447b26d0fde8f007354fd48a7814db15b7cb",
-                "sha256:a068a21ceac8a4d63dbfd964670474107f541babbd2250d61922f029858365fa"
+                "sha256:b307872f855b18632ce0c21c5e45be78c0ea7ae4c15c828c20788b26921eb3f6",
+                "sha256:b97d804b1e9b523befed77c48dacec60e6dcb0b5391d57af6a65a312a90648c0"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==2.9"
+            "version": "==2.10"
         },
         "more-itertools": {
             "hashes": [
                 "sha256:68c70cc7167bdf5c7c9d8f6954a7837089c6a36bf565383919bb595efb8a17e5",
                 "sha256:b78134b2063dd214000685165d81c154522c3ee0a1c0d4d113c80361c234c5a2"
             ],
-            "markers": "python_version >= '3.5'",
             "version": "==8.4.0"
         },
         "packaging": {
@@ -184,7 +177,6 @@
                 "sha256:4357f74f47b9c12db93624a82154e9b120fa8293699949152b22065d556079f8",
                 "sha256:998416ba6962ae7fbd6596850b80e17859a5753ba17c32284f67bfff33784181"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==20.4"
         },
         "pluggy": {
@@ -192,23 +184,20 @@
                 "sha256:15b2acde666561e1298d71b523007ed7364de07029219b604cf808bfa1c765b0",
                 "sha256:966c145cd83c96502c3c3868f50408687b38434af77734af1e9ca461a4081d2d"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==0.13.1"
         },
         "py": {
             "hashes": [
-                "sha256:a673fa23d7000440cc885c17dbd34fafcb7d7a6e230b29f6766400de36a33c44",
-                "sha256:f3b3a4c36512a4c4f024041ab51866f11761cc169670204b235f6b20523d4e6b"
+                "sha256:366389d1db726cd2fcfc79732e75410e5fe4d31db13692115529d34069a043c2",
+                "sha256:9ca6883ce56b4e8da7e79ac18787889fa5206c79dcc67fb065376cd2fe03f342"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
-            "version": "==1.8.2"
+            "version": "==1.9.0"
         },
         "pyparsing": {
             "hashes": [
                 "sha256:c203ec8783bf771a155b207279b9bccb8dea02d8f0c9e5f8ead507bc3246ecc1",
                 "sha256:ef9d7589ef3c200abe66653d3f1ab1033c3c419ae9b9bdb1240a85b024efc88b"
             ],
-            "markers": "python_version >= '2.6' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==2.4.7"
         },
         "pytest": {
@@ -232,23 +221,21 @@
                 "sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259",
                 "sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'",
             "version": "==1.15.0"
         },
         "urllib3": {
             "hashes": [
-                "sha256:3018294ebefce6572a474f0604c2021e33b3fd8006ecd11d62107a5d2a963527",
-                "sha256:88206b0eb87e6d677d424843ac5209e3fb9d0190d0ee169599165ec25e9d9115"
+                "sha256:91056c15fa70756691db97756772bb1eb9678fa585d9184f24534b100dc60f4a",
+                "sha256:e7983572181f5e1522d9c98453462384ee92a0be7fac5f1413a1e35c56cc0461"
             ],
-            "markers": "python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4' and python_version < '4'",
-            "version": "==1.25.9"
+            "version": "==1.25.10"
         },
         "wcwidth": {
             "hashes": [
-                "sha256:79375666b9954d4a1a10739315816324c3e73110af9d0e102d906fdb0aec009f",
-                "sha256:8c6b5b6ee1360b842645f336d9e5d68c55817c26d3050f46b235ef2bc650e48f"
+                "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784",
+                "sha256:c4d647b99872929fdb7bdcaa4fbe7f01413ed3d98077df798530e5b04f116c83"
             ],
-            "version": "==0.2.4"
+            "version": "==0.2.5"
         }
     }
 }
diff --git a/backend/requirements.txt b/backend/requirements.txt
index 9cf7d15..3ad1413 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -1,9 +1,10 @@
-click==7.1.2; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
+-i https://pypi.org/simple/
+click==7.1.2
 fastapi==0.58.0
 h11==0.9.0
-httptools==0.1.1; sys_platform != 'win32' and sys_platform != 'cygwin' and platform_python_implementation != 'PyPy'
-pydantic==1.5.1; python_version >= '3.6'
-starlette==0.13.4; python_version >= '3.6'
-uvicorn==0.11.5
-uvloop==0.14.0; sys_platform != 'win32' and sys_platform != 'cygwin' and platform_python_implementation != 'PyPy'
-websockets==8.1; python_full_version >= '3.6.1'
+httptools==0.1.1 ; sys_platform != 'win32' and sys_platform != 'cygwin' and platform_python_implementation != 'PyPy'
+pydantic==1.6.1
+starlette==0.13.4
+uvicorn==0.11.7
+uvloop==0.14.0 ; sys_platform != 'win32' and sys_platform != 'cygwin' and platform_python_implementation != 'PyPy'
+websockets==8.1