diff --git a/package-lock.json b/package-lock.json
index 6c0f177..c63eb13 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -101,12 +101,27 @@
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@@ -432,9 +505,19 @@
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@@ -542,7 +625,7 @@
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@@ -606,7 +689,7 @@
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-      "integrity": "sha1-mMI9qxF1ZXuMBXPozszZGw/xjIQ="
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@@ -1294,9 +1411,9 @@
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@@ -1437,7 +1554,7 @@
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-      "integrity": "sha1-9JvmtIeJTdxA3MlKMi9hEJLgDV4="
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-        "etag": "1.8.1",
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+        "destroy": "~1.0.4",
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
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-        "ms": "2.0.0",
-        "on-finished": "2.3.0",
-        "range-parser": "1.2.0",
-        "statuses": "1.4.0"
+        "http-errors": "1.8.1",
+        "mime": "1.6.0",
+        "ms": "2.1.3",
+        "on-finished": "~2.3.0",
+        "range-parser": "~1.2.1",
+        "statuses": "~1.5.0"
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+            "inherits": "2.0.4",
+            "setprototypeof": "1.2.0",
+            "statuses": ">= 1.5.0 < 2",
+            "toidentifier": "1.0.1"
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+        "inherits": {
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+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
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+          "resolved": "https://registry.npmjs.org/mime/-/mime-1.6.0.tgz",
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+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
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+        },
+        "setprototypeof": {
+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.2.0.tgz",
+          "integrity": "sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw=="
+        },
+        "statuses": {
+          "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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@@ -1818,14 +1974,14 @@
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-      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.13.2.tgz",
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+      "version": "1.14.2",
+      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.14.2.tgz",
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-        "escape-html": "1.0.3",
-        "parseurl": "1.3.2",
-        "send": "0.16.2"
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "parseurl": "~1.3.3",
+        "send": "0.17.2"
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@@ -1975,6 +2131,11 @@
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       "integrity": "sha1-uDVx+k2MJbguIxsG46MFXeTKGkc="
     },
+    "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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       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/token-stream/-/token-stream-0.0.1.tgz",
@@ -2012,12 +2173,27 @@
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+      "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz",
+      "integrity": "sha512-TkRKr9sUTxEH8MdfuCSP7VizJyzRNMjj2J2do2Jr3Kym598JVdEksuzPQCnlFPW4ky9Q+iA+ma9BGm06XQBy8g==",
       "requires": {
         "media-typer": "0.3.0",
-        "mime-types": "2.1.20"
+        "mime-types": "~2.1.24"
+      },
+      "dependencies": {
+        "mime-db": {
+          "version": "1.52.0",
+          "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.52.0.tgz",
+          "integrity": "sha512-sPU4uV7dYlvtWJxwwxHD0PuihVNiE7TyAbQ5SWxDCB9mUYvOgroQOwYQQOKPJ8CIbE+1ETVlOoK1UC2nU3gYvg=="
+        },
+        "mime-types": {
+          "version": "2.1.35",
+          "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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+          }
+        }
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     "uglify-js": {
@@ -2069,7 +2245,7 @@
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-      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
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@@ -2079,7 +2255,7 @@
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-      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
+      "integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg=="
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diff --git a/package.json b/package.json
index 5c70602..50d5288 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
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     "debug": "~2.6.9",
     "dotenv": "^6.0.0",
-    "express": "~4.16.0",
+    "express": "~4.17.3",
     "express-jwt": "^5.3.1",
     "http-errors": "~1.6.2",
     "jwks-rsa": "^1.3.0",