diff --git a/package-lock.json b/package-lock.json
index 17df1c0..0255ca1 100644
--- a/package-lock.json
+++ b/package-lock.json
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+          "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="
+        },
+        "setprototypeof": {
+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.2.0.tgz",
+          "integrity": "sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw=="
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@@ -3287,14 +3658,21 @@
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-      "version": "1.13.2",
-      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.13.2.tgz",
-      "integrity": "sha1-CV6Ecv1bRiN9tQzkhqQ/S4bGzsE=",
+      "version": "1.14.2",
+      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.14.2.tgz",
+      "integrity": "sha512-+TMNA9AFxUEGuC0z2mevogSnn9MXKb4fa7ngeRMJaaGv8vTwnIEkKi+QGvPt33HSnf8pRS+WGM0EbMtCJLKMBQ==",
       "requires": {
         "encodeurl": "~1.0.2",
         "escape-html": "~1.0.3",
-        "parseurl": "~1.3.2",
-        "send": "0.16.2"
+        "parseurl": "~1.3.3",
+        "send": "0.17.2"
+      },
+      "dependencies": {
+        "parseurl": {
+          "version": "1.3.3",
+          "resolved": "https://registry.npmjs.org/parseurl/-/parseurl-1.3.3.tgz",
+          "integrity": "sha512-CiyeOxFT/JZyN5m0z9PfXw4SCBJ6Sygz1Dpl0wqjlhDEGGBP1GnsUVEL0p63hoG1fcj3fHynXi9NYO4nWOL+qQ=="
+        }
       }
     },
     "set-immediate-shim": {
@@ -3325,6 +3703,16 @@
       "resolved": "https://registry.npmjs.org/should/-/should-2.1.1.tgz",
       "integrity": "sha1-xkixOotGRGXC+DjqDJPxLkrgbGs="
     },
+    "side-channel": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/side-channel/-/side-channel-1.0.4.tgz",
+      "integrity": "sha512-q5XPytqFEIKHkGdiMIrY10mvLRvnQh42/+GoBlFW3b2LXLE2xxJpZFdm94we0BaoV3RwJyGqg5wS7epxTv0Zvw==",
+      "requires": {
+        "call-bind": "^1.0.0",
+        "get-intrinsic": "^1.0.2",
+        "object-inspect": "^1.9.0"
+      }
+    },
     "sigmund": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/sigmund/-/sigmund-1.0.1.tgz",
@@ -3400,22 +3788,24 @@
         "strip-ansi": "^4.0.0"
       }
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-    "string.prototype.trimleft": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/string.prototype.trimleft/-/string.prototype.trimleft-2.1.1.tgz",
-      "integrity": "sha512-iu2AGd3PuP5Rp7x2kEZCrB2Nf41ehzh+goo8TV7z8/XDBbsvc6HQIlUl9RjkZ4oyrW1XM5UwlGl1oVEaDjg6Ag==",
+    "string.prototype.trimend": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/string.prototype.trimend/-/string.prototype.trimend-1.0.6.tgz",
+      "integrity": "sha512-JySq+4mrPf9EsDBEDYMOb/lM7XQLulwg5R/m1r0PXEFqrV0qHvl58sdTilSXtKOflCsK2E8jxf+GKC0T07RWwQ==",
       "requires": {
-        "define-properties": "^1.1.3",
-        "function-bind": "^1.1.1"
+        "call-bind": "^1.0.2",
+        "define-properties": "^1.1.4",
+        "es-abstract": "^1.20.4"
       }
     },
-    "string.prototype.trimright": {
-      "version": "2.1.1",
-      "resolved": "https://registry.npmjs.org/string.prototype.trimright/-/string.prototype.trimright-2.1.1.tgz",
-      "integrity": "sha512-qFvWL3/+QIgZXVmJBfpHmxLB7xsUXz6HsUmP8+5dRaC3Q7oKUv9Vo6aMCRZC1smrtyECFsIT30PqBJ1gTjAs+g==",
+    "string.prototype.trimstart": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/string.prototype.trimstart/-/string.prototype.trimstart-1.0.6.tgz",
+      "integrity": "sha512-omqjMDaY92pbn5HOX7f9IccLA+U1tA9GvtU4JrodiXFfYB7jPzzHpRzpglLAjtUV6bB557zwClJezTqnAiYnQA==",
       "requires": {
-        "define-properties": "^1.1.3",
-        "function-bind": "^1.1.1"
+        "call-bind": "^1.0.2",
+        "define-properties": "^1.1.4",
+        "es-abstract": "^1.20.4"
       }
     },
     "string_decoder": {
@@ -3485,6 +3875,11 @@
         }
       }
     },
+    "toidentifier": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
+      "integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA=="
+    },
     "touch": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/touch/-/touch-3.1.0.tgz",
@@ -3602,6 +3997,17 @@
         "random-bytes": "~1.0.0"
       }
     },
+    "unbox-primitive": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/unbox-primitive/-/unbox-primitive-1.0.2.tgz",
+      "integrity": "sha512-61pPlCD9h51VoreyJ0BReideM3MDKMKnh6+V9L08331ipq6Q8OFXZYiqP6n/tbHx4s5I9uRhcye6BrbkizkBDw==",
+      "requires": {
+        "call-bind": "^1.0.2",
+        "has-bigints": "^1.0.2",
+        "has-symbols": "^1.0.3",
+        "which-boxed-primitive": "^1.0.2"
+      }
+    },
     "undefsafe": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/undefsafe/-/undefsafe-2.0.2.tgz",
@@ -3686,7 +4092,7 @@
     "vary": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
-      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
+      "integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg=="
     },
     "verror": {
       "version": "1.10.0",
@@ -3711,6 +4117,18 @@
         "isexe": "^2.0.0"
       }
     },
+    "which-boxed-primitive": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/which-boxed-primitive/-/which-boxed-primitive-1.0.2.tgz",
+      "integrity": "sha512-bwZdv0AKLpplFY2KZRX6TvyuN7ojjr7lwkg6ml0roIy9YeuSr7JS372qlNW18UQYzgYK9ziGcerWqZOmEn9VNg==",
+      "requires": {
+        "is-bigint": "^1.0.1",
+        "is-boolean-object": "^1.1.0",
+        "is-number-object": "^1.0.4",
+        "is-string": "^1.0.5",
+        "is-symbol": "^1.0.3"
+      }
+    },
     "widest-line": {
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/widest-line/-/widest-line-2.0.1.tgz",
diff --git a/package.json b/package.json
index e21a2c3..1a7bbdf 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
     "consolidate": "~0.13.1",
     "cookie-parser": "^1.3.3",
     "debug": "^2.1.1",
-    "express": "^4.11.1",
+    "express": "^4.17.3",
     "express-session": "^1.10.1",
     "fs": "0.0.1-security",
     "http-post": "^0.1.1",