diff --git a/backend/package-lock.json b/backend/package-lock.json
index 95532c6..c91371f 100644
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@@ -1220,26 +1220,60 @@
       "integrity": "sha1-Epai1Y/UXxmg9s4B1lcB4sc1tus="
     },
     "jsonwebtoken": {
-      "version": "8.2.0",
-      "resolved": "https://registry.npmjs.org/jsonwebtoken/-/jsonwebtoken-8.2.0.tgz",
-      "integrity": "sha512-1Wxh8ADP3cNyPl8tZ95WtraHXCAyXupgc0AhMHjU9er98BV+UcKsO7OJUjfhIu0Uba9A40n1oSx8dbJYrm+EoQ==",
-      "requires": {
-        "jws": "3.1.4",
-        "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",
-        "xtend": "4.0.1"
+      "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=="
+        },
         "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"
+          }
         }
       }
     },
@@ -1290,36 +1324,6 @@
       "resolved": "https://registry.npmjs.org/lodash.get/-/lodash.get-4.4.2.tgz",
       "integrity": "sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk="
     },
-    "lodash.includes": {
-      "version": "4.3.0",
-      "resolved": "https://registry.npmjs.org/lodash.includes/-/lodash.includes-4.3.0.tgz",
-      "integrity": "sha1-YLuYqHy5I8aMoeUTJUgzFISfVT8="
-    },
-    "lodash.isboolean": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/lodash.isboolean/-/lodash.isboolean-3.0.3.tgz",
-      "integrity": "sha1-bC4XHbKiV82WgC/UOwGyDV9YcPY="
-    },
-    "lodash.isinteger": {
-      "version": "4.0.4",
-      "resolved": "https://registry.npmjs.org/lodash.isinteger/-/lodash.isinteger-4.0.4.tgz",
-      "integrity": "sha1-YZwK89A/iwTDH1iChAt3sRzWg0M="
-    },
-    "lodash.isnumber": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/lodash.isnumber/-/lodash.isnumber-3.0.3.tgz",
-      "integrity": "sha1-POdoEMWSjQM1IwGsKHMX8RwLH/w="
-    },
-    "lodash.isplainobject": {
-      "version": "4.0.6",
-      "resolved": "https://registry.npmjs.org/lodash.isplainobject/-/lodash.isplainobject-4.0.6.tgz",
-      "integrity": "sha1-fFJqUtibRcRcxpC4gWO+BJf1UMs="
-    },
-    "lodash.isstring": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/lodash.isstring/-/lodash.isstring-4.0.1.tgz",
-      "integrity": "sha1-1SfftUVuynzJu5XV2ur4i6VKVFE="
-    },
     "lodash.once": {
       "version": "4.1.1",
       "resolved": "https://registry.npmjs.org/lodash.once/-/lodash.once-4.1.1.tgz",
@@ -1335,6 +1339,14 @@
       "resolved": "https://registry.npmjs.org/long-timeout/-/long-timeout-0.1.1.tgz",
       "integrity": "sha1-lyHXiLR+C8taJMLivuGg2lXatRQ="
     },
+    "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"
+      }
+    },
     "media-typer": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
@@ -2460,6 +2472,11 @@
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
       "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68="
     },
+    "yallist": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
+    },
     "yeast": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/yeast/-/yeast-0.1.2.tgz",
diff --git a/backend/package.json b/backend/package.json
index 66ba8a8..ef16324 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -21,7 +21,7 @@
     "express-formidable": "^1.0.0",
     "express-session": "^1.15.6",
     "helmet": "^3.12.0",
-    "jsonwebtoken": "^8.2.0",
+    "jsonwebtoken": "^9.0.0",
     "moment": "^2.21.0",
     "mongoose": "^5.0.9",
     "mongoose-hidden": "^1.5.3",