diff --git a/package-lock.json b/package-lock.json
index 49043a1..55feee3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,12 +5,27 @@
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-      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.4.tgz",
-      "integrity": "sha1-hiRnWMfdbSGmR0/whKR0DsBesh8=",
+      "version": "1.3.8",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.8.tgz",
+      "integrity": "sha512-PYAthTa2m2VKxuvSD3DPC/Gy+U+sOA1LAuT8mkmRuvw+NACSaeXEQ+NHcVF7rONl6qcaxV3Uuemwawk+7+SJLw==",
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-        "negotiator": "0.6.1"
+        "mime-types": "~2.1.34",
+        "negotiator": "0.6.3"
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+          "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.52.0.tgz",
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+        },
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+          "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.35.tgz",
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+          "requires": {
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+          }
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@@ -23,6 +38,7 @@
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       "integrity": "sha1-1t4Q1a9hMtW9aSQn1G/FOFOQlMc=",
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@@ -31,10 +47,20 @@
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-          "integrity": "sha1-d0Zt5YnNXTyV8TiqeLxWmjy10no="
+          "integrity": "sha1-d0Zt5YnNXTyV8TiqeLxWmjy10no=",
+          "optional": true
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+      "resolved": "https://registry.npmjs.org/aggregate-error/-/aggregate-error-3.1.0.tgz",
+      "integrity": "sha512-4I7Td01quW/RpocfNayFdFVk1qSuoh0E7JrbRJ16nH01HhKFQ88INq9Sd+nd72zqRySlr9BmDA8xlEJ6vJMrYA==",
+      "requires": {
+        "clean-stack": "^2.0.0",
+        "indent-string": "^4.0.0"
+      }
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@@ -84,7 +110,8 @@
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-      "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
+      "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU=",
+      "optional": true
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@@ -120,19 +147,14 @@
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-      "integrity": "sha1-LJ1jiy4ZGgjqHWzJiOrda6W9wFM=",
-      "optional": true,
+      "version": "0.18.1",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-0.18.1.tgz",
+      "integrity": "sha512-0BfJq4NSfQXd+SkFdrvFbG7addhYSBA2mQwISr46pD6E5iqkWg02RAs8vyTT/j0RTnoYmeXauBuSv1qKwR179g==",
       "requires": {
-        "follow-redirects": "1.0.0"
+        "follow-redirects": "1.5.10",
+        "is-buffer": "^2.0.2"
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-      "resolved": "https://registry.npmjs.org/base64url/-/base64url-2.0.0.tgz",
-      "integrity": "sha1-6sFuA+oUOO/5Qj1puqNiYu0fcLs="
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@@ -200,12 +222,13 @@
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-      "integrity": "sha1-+OcRMvf/5uAaXJaXpMbz5I1cyBk="
+      "integrity": "sha512-zRpUiDwd/xk6ADqPMATG8vc9VPrkck7T07OIx0gnjmJAnHnTVXNQG3vfvWNuiZIkwu9KrKdA1iJKfsfTVxE6NA=="
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-      "integrity": "sha1-JrOIXRD6E9t/wBquOquHAZngEkw="
+      "integrity": "sha1-JrOIXRD6E9t/wBquOquHAZngEkw=",
+      "optional": true
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@@ -227,6 +250,30 @@
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       "integrity": "sha1-0ygVQE1olpn4Wk6k+odV3ROpYEg="
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+      "resolved": "https://registry.npmjs.org/cache-content-type/-/cache-content-type-1.0.1.tgz",
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+          "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.52.0.tgz",
+          "integrity": "sha512-sPU4uV7dYlvtWJxwwxHD0PuihVNiE7TyAbQ5SWxDCB9mUYvOgroQOwYQQOKPJ8CIbE+1ETVlOoK1UC2nU3gYvg=="
+        },
+        "mime-types": {
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+          "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.35.tgz",
+          "integrity": "sha512-ZDY+bPm5zTTF+YpCrAU9nK0UgICYPT0QtT1NZWFv4s++TNkcgVaT0g6+4R2uI4MjQjzysHB1zxuWL50hzaeXiw==",
+          "requires": {
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@@ -250,6 +297,11 @@
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+    "clean-stack": {
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+      "resolved": "https://registry.npmjs.org/clean-stack/-/clean-stack-2.2.0.tgz",
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@@ -270,6 +322,7 @@
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@@ -307,9 +360,19 @@
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-      "integrity": "sha1-DPaLud318r55YcOoUXjLhdunjLQ="
+      "version": "0.5.4",
+      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.4.tgz",
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+        }
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@@ -317,12 +380,19 @@
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-      "integrity": "sha1-fIphX1SBxhq58WyDNzG8uPZjuZs=",
+      "version": "0.8.0",
+      "resolved": "https://registry.npmjs.org/cookies/-/cookies-0.8.0.tgz",
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-        "keygrip": "1.0.2"
+        "depd": "~2.0.0",
+        "keygrip": "~1.1.0"
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+        }
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@@ -391,7 +461,7 @@
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-      "integrity": "sha1-9dJgKStmDghO/0zbyfCK0yR0SLU="
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@@ -413,12 +483,13 @@
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-      "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk="
+      "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk=",
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-      "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o="
+      "integrity": "sha512-bd2L678uiWATM6m5Z1VzNCErI3jiGzt6HGY8OVICs40JQq/HALfbyNJmp0UDakEY4pMMaN0Ly5om/B1VI/+xfQ=="
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@@ -426,9 +497,9 @@
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-      "integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.2.0.tgz",
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@@ -436,6 +507,11 @@
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+      "resolved": "https://registry.npmjs.org/easy-fsm/-/easy-fsm-1.0.0.tgz",
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@@ -446,12 +522,11 @@
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-      "integrity": "sha1-S8kmJ07Dtau1AW5+HWCSGsJisqE=",
+      "version": "1.0.11",
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@@ -464,11 +539,6 @@
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-      "integrity": "sha1-/cpRzuYTOJXjyI1TXOSdv/YqRjM="
+      "integrity": "sha1-/cpRzuYTOJXjyI1TXOSdv/YqRjM=",
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@@ -509,15 +580,22 @@
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-      "integrity": "sha1-p1Xqe8Gt/MWjHOfnYtuq3F5jZEQ="
+      "integrity": "sha1-p1Xqe8Gt/MWjHOfnYtuq3F5jZEQ=",
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-      "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU="
+      "integrity": "sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=",
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@@ -565,12 +643,21 @@
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-      "integrity": "sha1-jjQpjL0uF28lTv/sdaHHjMhJ/Tc=",
-      "optional": true,
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       "requires": {
-        "debug": "2.6.9"
+        "debug": "=3.1.0"
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@@ -593,7 +680,7 @@
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-      "integrity": "sha1-PYyt2Q2XZWn6g1qx+OSyOhBWBac="
+      "integrity": "sha512-zJ2mQYM18rEFOudeV4GShTGIQ7RbzA7ozbU9I/XBpm7kqgMywgmylMwXHxZJmkVoYkna9d2pVXVXPdYTP9ej8Q=="
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@@ -710,6 +797,19 @@
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@@ -735,15 +835,45 @@
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-      "integrity": "sha1-oxpc+IyHPsu1eWkH1NbxMujAHko=",
+      "version": "1.5.0",
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+        "deep-equal": "~1.0.1",
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-      "integrity": "sha1-WqVzhLyIJWivyQrASFKj1YZYrus="
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+          "integrity": "sha1-/iZaIYrGpXz+hUkn6dBMGYJe3es=",
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+      "integrity": "sha1-9ebgatdLeU+1tbZpiL9yjvHe2+g=",
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@@ -1269,11 +1469,6 @@
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@@ -1294,6 +1489,14 @@
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@@ -1301,6 +1504,24 @@
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+          "resolved": "https://registry.npmjs.org/follow-redirects/-/follow-redirects-1.0.0.tgz",
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+          "requires": {
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@@ -1331,6 +1552,7 @@
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@@ -1563,11 +1786,6 @@
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@@ -1584,9 +1802,9 @@
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-      "integrity": "sha1-KzJxhOiZIQEXeyhWP7XnECrNDKk="
+      "version": "0.6.3",
+      "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.3.tgz",
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@@ -1640,12 +1858,14 @@
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-      "integrity": "sha1-ecSQihwPXzdbc/6IjamCj23JY6Q="
+      "integrity": "sha1-ecSQihwPXzdbc/6IjamCj23JY6Q=",
+      "optional": true
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       "integrity": "sha1-z1mU4v0mjQD1zw+nZ6CBae2wfsA=",
+      "optional": true,
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@@ -1675,7 +1895,8 @@
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-      "integrity": "sha1-WG24EB2zDLRDjrVGc3pBqtDPE9U="
+      "integrity": "sha1-WG24EB2zDLRDjrVGc3pBqtDPE9U=",
+      "optional": true
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@@ -1699,7 +1920,7 @@
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       "resolved": "https://registry.npmjs.org/only/-/only-0.0.2.tgz",
-      "integrity": "sha1-Kv3oTQPlC5qO3EROMGEKcCle37Q="
+      "integrity": "sha512-Fvw+Jemq5fjjyWz6CpKx6w9s7xxqo3+JCyM0WXWeCSOboZ8ABkyvP8ID4CZuChA/wxSx+XSJmdOm8rGVyJ1hdQ=="
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@@ -1715,6 +1936,30 @@
         "wordwrap": "1.0.0"
       }
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+    "p-any": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/p-any/-/p-any-2.1.0.tgz",
+      "integrity": "sha512-JAERcaMBLYKMq+voYw36+x5Dgh47+/o7yuv2oQYuSSUml4YeqJEFznBrY2UeEkoSHqBua6hz518n/PsowTYLLg==",
+      "requires": {
+        "p-cancelable": "^2.0.0",
+        "p-some": "^4.0.0",
+        "type-fest": "^0.3.0"
+      }
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+      "resolved": "https://registry.npmjs.org/p-cancelable/-/p-cancelable-2.1.1.tgz",
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+    },
+    "p-some": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/p-some/-/p-some-4.1.0.tgz",
+      "integrity": "sha512-MF/HIbq6GeBqTrTIl5OJubzkGU+qfFhAFi0gnTAK6rgEIJIknEiABHOTtQu4e6JiXjIwuMPMUFQzyHh5QjCl1g==",
+      "requires": {
+        "aggregate-error": "^3.0.0",
+        "p-cancelable": "^2.0.0"
+      }
+    },
     "pac-proxy-agent": {
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       "resolved": "https://registry.npmjs.org/pac-proxy-agent/-/pac-proxy-agent-1.1.0.tgz",
@@ -1804,6 +2049,11 @@
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       "optional": true
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+    "pify": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/pify/-/pify-4.0.1.tgz",
+      "integrity": "sha512-uB80kBFb/tfd68bVleG9T5GGsGPjJrLAUpR5PZIrhBnIaRTQRjqdJSsIKkOP6OAIFbj7GOrcudc5pNjZ+geV2g=="
+    },
     "pinkie": {
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/pinkie/-/pinkie-2.0.4.tgz",
@@ -1822,7 +2072,8 @@
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-      "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ="
+      "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=",
+      "optional": true
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@@ -2018,12 +2269,14 @@
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       "resolved": "https://registry.npmjs.org/smart-buffer/-/smart-buffer-1.1.15.tgz",
-      "integrity": "sha1-fxFLW2X6s+KjWqd1uxLw0cZJvxY="
+      "integrity": "sha1-fxFLW2X6s+KjWqd1uxLw0cZJvxY=",
+      "optional": true
     },
     "smtp-connection": {
       "version": "2.12.0",
       "resolved": "https://registry.npmjs.org/smtp-connection/-/smtp-connection-2.12.0.tgz",
       "integrity": "sha1-1275EnyyPCJZ7bHoNJwujV4tdME=",
+      "optional": true,
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@@ -2042,6 +2295,7 @@
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       "integrity": "sha1-W4t/x8jzQcU+0FbpKbe/Tei6e1o=",
+      "optional": true,
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@@ -2050,7 +2304,8 @@
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           "resolved": "https://registry.npmjs.org/ip/-/ip-1.1.5.tgz",
-          "integrity": "sha1-vd7XARQpCCjAoDnnLvJfWq7ENUo="
+          "integrity": "sha1-vd7XARQpCCjAoDnnLvJfWq7ENUo=",
+          "optional": true
         }
       }
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@@ -2058,6 +2313,7 @@
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+      "optional": true,
       "requires": {
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@@ -2087,9 +2343,9 @@
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-      "version": "1.4.0",
-      "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.4.0.tgz",
-      "integrity": "sha512-zhSCtt8v2NDrRlPQpCNtw/heZLtfUDqxBM1udqikb/Hbk52LK4nQSwr10u77iopCW5LsyHpuXS0GnEc48mLeew=="
+      "version": "1.5.0",
+      "resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
+      "integrity": "sha512-OpZ3zP+jT1PI7I8nemJX4AKmAX070ZkYPVWV/AaKTJl+tXCTGyVdC1a4SL8RUQYEwk/f34ZX8UTykN68FwrqAA=="
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@@ -2197,20 +2453,10 @@
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       "optional": true
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-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/topo/-/topo-1.1.0.tgz",
-      "integrity": "sha1-6ddRYV0buH3IZdsYL6HKCl71NtU=",
-      "requires": {
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-      },
-      "dependencies": {
-        "hoek": {
-          "version": "2.16.3",
-          "resolved": "https://registry.npmjs.org/hoek/-/hoek-2.16.3.tgz",
-          "integrity": "sha1-ILt0A9POo5jpHcRxCo/xuCdKJe0="
-        }
-      }
+    "toidentifier": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
+      "integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA=="
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@@ -2246,10 +2492,16 @@
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       "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
+      "optional": true,
       "requires": {
         "prelude-ls": "1.1.2"
       }
     },
+    "type-fest": {
+      "version": "0.3.1",
+      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.3.1.tgz",
+      "integrity": "sha512-cUGJnCdr4STbePCgqNFbpVNCepa+kAVohJs1sLhxzdH+gnEoOd8VhbYa7pD3zZYGiURWM2xzEII3fQcRizDkYQ=="
+    },
     "type-is": {
       "version": "1.6.15",
       "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.15.tgz",
@@ -2270,7 +2522,8 @@
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       "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.7.0.tgz",
-      "integrity": "sha1-a7rwh3UA02vjTsqlhODbn+8DUgk="
+      "integrity": "sha1-a7rwh3UA02vjTsqlhODbn+8DUgk=",
+      "optional": true
     },
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@@ -2301,7 +2554,7 @@
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       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
-      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
+      "integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg=="
     },
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@@ -2335,7 +2588,18 @@
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       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
-      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68="
+      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68=",
+      "optional": true
+    },
+    "yallist": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
+    },
+    "ylru": {
+      "version": "1.3.2",
+      "resolved": "https://registry.npmjs.org/ylru/-/ylru-1.3.2.tgz",
+      "integrity": "sha512-RXRJzMiK6U2ye0BlGGZnmpwJDPgakn6aNQ0A7gHRbD4I0uvK4TW6UqkK1V0pp9jskjJBAXd3dRrbzWkqJ+6cxA=="
     }
   }
 }
diff --git a/package.json b/package.json
index 922ba2f..91ad186 100644
--- a/package.json
+++ b/package.json
@@ -24,7 +24,7 @@
     "eventemitter3": "^3.1.0",
     "koa": "^2.4.1",
     "koa-bodyparser": "^4.2.0",
-    "koa-jwt": "^3.3.1",
+    "koa-jwt": "^4.0.4",
     "koa-logger": "^3.2.0",
     "koa-router": "^7.4.0",
     "koa-session": "^5.8.1",