diff --git a/package-lock.json b/package-lock.json
index 5c43e11..d237627 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -188,6 +188,15 @@
         "@types/node": "*"
       }
     },
+    "@types/koa__cors": {
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+      "resolved": "https://registry.npmjs.org/@types/koa__cors/-/koa__cors-2.2.3.tgz",
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+      "dev": true,
+      "requires": {
+        "@types/koa": "*"
+      }
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       "resolved": "https://registry.npmjs.org/@types/koa-bodyparser/-/koa-bodyparser-4.3.0.tgz",
@@ -215,15 +224,6 @@
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-      "resolved": "https://registry.npmjs.org/@types/koa__cors/-/koa__cors-2.2.3.tgz",
-      "integrity": "sha512-RfG2EuSc+nv/E+xbDSLW8KCoeri/3AkqwVPuENfF/DctllRoXhooboO//Sw7yFtkLvj7nG7O1H3JcZmoTQz8nQ==",
-      "dev": true,
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@@ -770,7 +770,7 @@
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       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
-      "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ="
+      "integrity": "sha512-QVb0dM5HvG+uaxitm8wONl7jltx8dqhfU33DcqtOZcLSVIKSDDLDi7+0LbAKiyI8hD9u42m2YxXSkMGWThaecQ=="
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@@ -872,12 +872,19 @@
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-      "resolved": "https://registry.npmjs.org/cookies/-/cookies-0.7.3.tgz",
-      "integrity": "sha512-+gixgxYSgQLTaTIilDHAdlNPZDENDQernEMiIcZpYYP14zgHsCt4Ce1FEjFtcp6GefhozebB6orvhAAWx/IS0A==",
+      "version": "0.9.1",
+      "resolved": "https://registry.npmjs.org/cookies/-/cookies-0.9.1.tgz",
+      "integrity": "sha512-TG2hpqe4ELx54QER/S3HQ9SRVnQnGBtKUz5bLQWtYAQ+o6GpgMs6sYUvaiJjVxb+UXwhRhAEP3m7LbsIZ77Hmw==",
       "requires": {
-        "depd": "~1.1.2",
-        "keygrip": "~1.0.3"
+        "depd": "~2.0.0",
+        "keygrip": "~1.1.0"
+      },
+      "dependencies": {
+        "depd": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/depd/-/depd-2.0.0.tgz",
+          "integrity": "sha512-g7nH6P6dyDioJogAAGprGpCtVImJhpPk/roCzdb3fIh61/s/nPsfR6onyMwkCAR/OlC3yBC0lESvUoQEAssIrw=="
+        }
       }
     },
     "copy-descriptor": {
@@ -1088,6 +1095,11 @@
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       "dev": true
     },
+    "encodeurl": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
+      "integrity": "sha512-TPJXq8JqFaVYm2CWmPvnP2Iyo4ZSM7/QKcSmuMLDObfpH5fi7RUGmd/rTDf+rut/saiDiQEeVTNgAmJEdAOx0w=="
+    },
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       "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.4.tgz",
@@ -1097,11 +1109,6 @@
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-      "resolved": "https://registry.npmjs.org/error-inject/-/error-inject-1.0.0.tgz",
-      "integrity": "sha1-4rPZG1Su1nLzCdlQ0VSFD6EdTzc="
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       "resolved": "https://registry.npmjs.org/es-abstract/-/es-abstract-1.14.2.tgz",
@@ -1869,24 +1876,24 @@
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           "optional": true
         },
-        "string-width": {
-          "version": "1.0.2",
+        "string_decoder": {
+          "version": "1.1.1",
           "bundled": true,
           "dev": true,
           "optional": true,
           "requires": {
-            "code-point-at": "^1.0.0",
-            "is-fullwidth-code-point": "^1.0.0",
-            "strip-ansi": "^3.0.0"
+            "safe-buffer": "~5.1.0"
           }
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-        "string_decoder": {
-          "version": "1.1.1",
+        "string-width": {
+          "version": "1.0.2",
           "bundled": true,
           "dev": true,
           "optional": true,
           "requires": {
-            "safe-buffer": "~5.1.0"
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
+            "strip-ansi": "^3.0.0"
           }
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@@ -2482,9 +2489,12 @@
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-      "resolved": "https://registry.npmjs.org/keygrip/-/keygrip-1.0.3.tgz",
-      "integrity": "sha512-/PpesirAIfaklxUzp4Yb7xBper9MwP6hNRA6BGGUFCgbJ+BM5CKBtsoxinNXkLHAr+GXS1/lSlF2rP7cv5Fl+g=="
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/keygrip/-/keygrip-1.1.0.tgz",
+      "integrity": "sha512-iYSchDJ+liQ8iwbSI2QqsQOvqv58eJCEanyJPJi+Khyu8smkcKSFUCbPwzFcL7YVtZ6eONjqRX/38caJ7QjRAQ==",
+      "requires": {
+        "tsscmp": "1.0.6"
+      }
     },
     "kind-of": {
       "version": "6.0.2",
@@ -2493,34 +2503,53 @@
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-      "version": "2.8.1",
-      "resolved": "https://registry.npmjs.org/koa/-/koa-2.8.1.tgz",
-      "integrity": "sha512-iCgjRkntcVud5amnioi+79r7TPVhKPfCY8UzL9GjyU+nIWTE9xsqyrJ6kib3InT9JYRyUu9Y67i5apCjf997TQ==",
+      "version": "2.16.1",
+      "resolved": "https://registry.npmjs.org/koa/-/koa-2.16.1.tgz",
+      "integrity": "sha512-umfX9d3iuSxTQP4pnzLOz0HKnPg0FaUUIKcye2lOiz3KPu1Y3M3xlz76dISdFPQs37P9eJz1wUpcTS6KDPn9fA==",
       "requires": {
         "accepts": "^1.3.5",
         "cache-content-type": "^1.0.0",
         "content-disposition": "~0.5.2",
         "content-type": "^1.0.4",
-        "cookies": "~0.7.1",
-        "debug": "~3.1.0",
+        "cookies": "~0.9.0",
+        "debug": "^4.3.2",
         "delegates": "^1.0.0",
-        "depd": "^1.1.2",
+        "depd": "^2.0.0",
         "destroy": "^1.0.4",
-        "error-inject": "^1.0.0",
+        "encodeurl": "^1.0.2",
         "escape-html": "^1.0.3",
         "fresh": "~0.5.2",
         "http-assert": "^1.3.0",
         "http-errors": "^1.6.3",
         "is-generator-function": "^1.0.7",
         "koa-compose": "^4.1.0",
-        "koa-convert": "^1.2.0",
-        "koa-is-json": "^1.0.0",
+        "koa-convert": "^2.0.0",
         "on-finished": "^2.3.0",
         "only": "~0.0.2",
         "parseurl": "^1.3.2",
         "statuses": "^1.5.0",
         "type-is": "^1.6.16",
         "vary": "^1.1.2"
+      },
+      "dependencies": {
+        "debug": {
+          "version": "4.4.0",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.4.0.tgz",
+          "integrity": "sha512-6WTZ/IxCY/T6BALoZHaE4ctp9xm+Z5kY/pzYaCHRFeyVhojxlrm+46y68HA6hr0TcwEssoxNiDEUJQjfPZ/RYA==",
+          "requires": {
+            "ms": "^2.1.3"
+          }
+        },
+        "depd": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/depd/-/depd-2.0.0.tgz",
+          "integrity": "sha512-g7nH6P6dyDioJogAAGprGpCtVImJhpPk/roCzdb3fIh61/s/nPsfR6onyMwkCAR/OlC3yBC0lESvUoQEAssIrw=="
+        },
+        "ms": {
+          "version": "2.1.3",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+          "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="
+        }
       }
     },
     "koa-bodyparser": {
@@ -2538,29 +2567,14 @@
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     },
     "koa-convert": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/koa-convert/-/koa-convert-1.2.0.tgz",
-      "integrity": "sha1-2kCHXfSd4FOQmNFwC1CCDOvNIdA=",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/koa-convert/-/koa-convert-2.0.0.tgz",
+      "integrity": "sha512-asOvN6bFlSnxewce2e/DK3p4tltyfC4VM7ZwuTuepI7dEQVcvpyFuBcEARu1+Hxg8DIwytce2n7jrZtRlPrARA==",
       "requires": {
         "co": "^4.6.0",
-        "koa-compose": "^3.0.0"
-      },
-      "dependencies": {
-        "koa-compose": {
-          "version": "3.2.1",
-          "resolved": "https://registry.npmjs.org/koa-compose/-/koa-compose-3.2.1.tgz",
-          "integrity": "sha1-qFzLQLfZhtjlo0Wzoazo6rz1Tec=",
-          "requires": {
-            "any-promise": "^1.1.0"
-          }
-        }
+        "koa-compose": "^4.1.0"
       }
     },
-    "koa-is-json": {
-      "version": "1.0.0",
-      "resolved": "https://registry.npmjs.org/koa-is-json/-/koa-is-json-1.0.0.tgz",
-      "integrity": "sha1-JzwH7c3Ljfaiwat9We52SRRR7BQ="
-    },
     "koa-router": {
       "version": "7.4.0",
       "resolved": "https://registry.npmjs.org/koa-router/-/koa-router-7.4.0.tgz",
@@ -3876,6 +3890,14 @@
       "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
       "integrity": "sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow="
     },
+    "string_decoder": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
+      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
+      "requires": {
+        "safe-buffer": "~5.1.0"
+      }
+    },
     "string-width": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
@@ -3906,14 +3928,6 @@
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-    "string_decoder": {
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-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.1.1.tgz",
-      "integrity": "sha512-n/ShnvDi6FHbbVfviro+WojiFzv+s8MPMHBczVePfUpDJLwoLT0ht1l4YwBCbi8pJAveEEdnkHyPyTP/mzRfwg==",
-      "requires": {
-        "safe-buffer": "~5.1.0"
-      }
-    },
     "strip-ansi": {
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       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
@@ -4249,6 +4263,11 @@
         }
       }
     },
+    "tsscmp": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/tsscmp/-/tsscmp-1.0.6.tgz",
+      "integrity": "sha512-LxhtAkPDTkVCMQjt2h6eBVY28KCjikZqZfMcC15YBeNjkgUpdCfBu5HoiOTDu86v6smE8yOjyEktJ8hlbANHQA=="
+    },
     "tsutils": {
       "version": "2.29.0",
       "resolved": "https://registry.npmjs.org/tsutils/-/tsutils-2.29.0.tgz",
diff --git a/package.json b/package.json
index 9cb4432..3301cc4 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "@types/supertest": "^2.0.8",
     "dotenv": "^8.1.0",
     "http-status-codes": "^1.3.2",
-    "koa": "^2.8.1",
+    "koa": "^2.16.1",
     "koa-bodyparser": "^4.2.1",
     "koa-router": "^7.4.0",
     "koa2-cors": "^2.0.6",