diff --git a/package-lock.json b/package-lock.json
index 45e8a37..cb105c2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4321,6 +4321,62 @@
         "express-unless": "^0.3.0",
         "jsonwebtoken": "^8.1.0",
         "lodash.set": "^4.0.0"
+      },
+      "dependencies": {
+        "ecdsa-sig-formatter": {
+          "version": "1.0.11",
+          "resolved": "https://registry.npmjs.org/ecdsa-sig-formatter/-/ecdsa-sig-formatter-1.0.11.tgz",
+          "integrity": "sha512-nagl3RYrbNv6kQkeJIpt6NJZy8twLB/2vtz6yN9Z4vRKHN4/QZJIEbqohALSgwKdnksuY3k5Addp5lg8sVoVcQ==",
+          "requires": {
+            "safe-buffer": "^5.0.1"
+          }
+        },
+        "jsonwebtoken": {
+          "version": "8.5.1",
+          "resolved": "https://registry.npmjs.org/jsonwebtoken/-/jsonwebtoken-8.5.1.tgz",
+          "integrity": "sha512-XjwVfRS6jTMsqYs0EsuJ4LGxXV14zQybNd4L2r0UvbVnSF9Af8x7p5MzbJ90Ioz/9TI41/hTCvznF/loiSzn8w==",
+          "requires": {
+            "jws": "^3.2.2",
+            "lodash.includes": "^4.3.0",
+            "lodash.isboolean": "^3.0.3",
+            "lodash.isinteger": "^4.0.4",
+            "lodash.isnumber": "^3.0.3",
+            "lodash.isplainobject": "^4.0.6",
+            "lodash.isstring": "^4.0.1",
+            "lodash.once": "^4.0.0",
+            "ms": "^2.1.1",
+            "semver": "^5.6.0"
+          }
+        },
+        "jwa": {
+          "version": "1.4.1",
+          "resolved": "https://registry.npmjs.org/jwa/-/jwa-1.4.1.tgz",
+          "integrity": "sha512-qiLX/xhEEFKUAJ6FiBMbes3w9ATzyk5W7Hvzpa/SLYdxNtng+gcurvrI7TbACjIXlsJyr05/S1oUhZrc63evQA==",
+          "requires": {
+            "buffer-equal-constant-time": "1.0.1",
+            "ecdsa-sig-formatter": "1.0.11",
+            "safe-buffer": "^5.0.1"
+          }
+        },
+        "jws": {
+          "version": "3.2.2",
+          "resolved": "https://registry.npmjs.org/jws/-/jws-3.2.2.tgz",
+          "integrity": "sha512-YHlZCB6lMTllWDtSPHz/ZXTsi8S00usEV6v1tjq8tOUZzw7DpSDWVXjXDre6ed1w/pd495ODpHZYSdkRTsa0HA==",
+          "requires": {
+            "jwa": "^1.4.1",
+            "safe-buffer": "^5.0.1"
+          }
+        },
+        "ms": {
+          "version": "2.1.3",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+          "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="
+        },
+        "semver": {
+          "version": "5.7.1",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
+          "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ=="
+        }
       }
     },
     "express-session": {
@@ -7071,25 +7127,73 @@
       }
     },
     "jsonwebtoken": {
-      "version": "8.3.0",
-      "resolved": "https://registry.npmjs.org/jsonwebtoken/-/jsonwebtoken-8.3.0.tgz",
-      "integrity": "sha512-oge/hvlmeJCH+iIz1DwcO7vKPkNGJHhgkspk8OH3VKlw+mbi42WtD4ig1+VXRln765vxptAv+xT26Fd3cteqag==",
-      "requires": {
-        "jws": "3.1.5",
-        "lodash.includes": "4.3.0",
-        "lodash.isboolean": "3.0.3",
-        "lodash.isinteger": "4.0.4",
-        "lodash.isnumber": "3.0.3",
-        "lodash.isplainobject": "4.0.6",
-        "lodash.isstring": "4.0.1",
-        "lodash.once": "4.1.1",
-        "ms": "2.1.1"
+      "version": "9.0.0",
+      "resolved": "https://registry.npmjs.org/jsonwebtoken/-/jsonwebtoken-9.0.0.tgz",
+      "integrity": "sha512-tuGfYXxkQGDPnLJ7SibiQgVgeDgfbPq2k2ICcbgqW8WxWLBAxKQM/ZCu/IT8SOSwmaYl4dpTFCW5xZv7YbbWUw==",
+      "requires": {
+        "jws": "^3.2.2",
+        "lodash": "^4.17.21",
+        "ms": "^2.1.1",
+        "semver": "^7.3.8"
       },
       "dependencies": {
+        "ecdsa-sig-formatter": {
+          "version": "1.0.11",
+          "resolved": "https://registry.npmjs.org/ecdsa-sig-formatter/-/ecdsa-sig-formatter-1.0.11.tgz",
+          "integrity": "sha512-nagl3RYrbNv6kQkeJIpt6NJZy8twLB/2vtz6yN9Z4vRKHN4/QZJIEbqohALSgwKdnksuY3k5Addp5lg8sVoVcQ==",
+          "requires": {
+            "safe-buffer": "^5.0.1"
+          }
+        },
+        "jwa": {
+          "version": "1.4.1",
+          "resolved": "https://registry.npmjs.org/jwa/-/jwa-1.4.1.tgz",
+          "integrity": "sha512-qiLX/xhEEFKUAJ6FiBMbes3w9ATzyk5W7Hvzpa/SLYdxNtng+gcurvrI7TbACjIXlsJyr05/S1oUhZrc63evQA==",
+          "requires": {
+            "buffer-equal-constant-time": "1.0.1",
+            "ecdsa-sig-formatter": "1.0.11",
+            "safe-buffer": "^5.0.1"
+          }
+        },
+        "jws": {
+          "version": "3.2.2",
+          "resolved": "https://registry.npmjs.org/jws/-/jws-3.2.2.tgz",
+          "integrity": "sha512-YHlZCB6lMTllWDtSPHz/ZXTsi8S00usEV6v1tjq8tOUZzw7DpSDWVXjXDre6ed1w/pd495ODpHZYSdkRTsa0HA==",
+          "requires": {
+            "jwa": "^1.4.1",
+            "safe-buffer": "^5.0.1"
+          }
+        },
+        "lodash": {
+          "version": "4.17.21",
+          "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
+          "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg=="
+        },
+        "lru-cache": {
+          "version": "6.0.0",
+          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+          "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+          "requires": {
+            "yallist": "^4.0.0"
+          }
+        },
         "ms": {
-          "version": "2.1.1",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
-          "integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg=="
+          "version": "2.1.3",
+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+          "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="
+        },
+        "semver": {
+          "version": "7.3.8",
+          "resolved": "https://registry.npmjs.org/semver/-/semver-7.3.8.tgz",
+          "integrity": "sha512-NB1ctGL5rlHrPJtFDVIVzTyQylMLu9N9VICA6HSFJo8MCGVTMW6gfpicwKmmK/dAjTOrqu5l63JJOpDSrAis3A==",
+          "requires": {
+            "lru-cache": "^6.0.0"
+          }
+        },
+        "yallist": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+          "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
         }
       }
     },
diff --git a/package.json b/package.json
index 6c44c88..8cb95a7 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "express-validator": "^5.3.0",
     "firebase": "^5.3.1",
     "firebase-admin": "^5.13.1",
-    "jsonwebtoken": "^8.3.0",
+    "jsonwebtoken": "^9.0.0",
     "method-override": "^2.3.10",
     "methods": "^1.1.2",
     "mocha": "^5.2.0",