diff --git a/package-lock.json b/package-lock.json
index 1026769..e6a11fe 100644
--- a/package-lock.json
+++ b/package-lock.json
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           "integrity": "sha1-dp66rz9KY6rTr56NMEybvnm/sOY=",
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@@ -4720,6 +4978,7 @@
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@@ -4748,6 +5009,7 @@
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+      "optional": true,
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@@ -4756,6 +5018,7 @@
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           "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
+          "optional": true,
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@@ -4873,6 +5136,7 @@
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+      "optional": true,
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@@ -4884,12 +5148,14 @@
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-      "integrity": "sha1-PpNdfd1zYxuXZZlW1VEo6HtQhKM="
+      "integrity": "sha1-PpNdfd1zYxuXZZlW1VEo6HtQhKM=",
+      "optional": true
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     "split-string": {
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+      "optional": true,
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@@ -4924,6 +5190,7 @@
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       "integrity": "sha1-YICcOcv/VTNyJv1eC1IPNB8ftcY=",
+      "optional": true,
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@@ -4933,6 +5200,7 @@
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           "integrity": "sha1-w1se+RjsPJkPmlvFe+BKrOxcgRY=",
+          "optional": true,
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@@ -5169,6 +5437,7 @@
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       "integrity": "sha1-KXWIt7Dn4KwI4E5nL4XB9JmeF68=",
+      "optional": true,
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@@ -5177,6 +5446,7 @@
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           "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
+          "optional": true,
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@@ -5187,6 +5457,7 @@
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+      "optional": true,
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@@ -5198,11 +5469,17 @@
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       "integrity": "sha1-fIDBe53+vlmeJzZ+DU3VWQFB2zg=",
+      "optional": true,
       "requires": {
         "is-number": "^3.0.0",
         "repeat-string": "^1.6.1"
       }
     },
+    "toidentifier": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
+      "integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA=="
+    },
     "tough-cookie": {
       "version": "2.4.3",
       "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.4.3.tgz",
@@ -5314,6 +5591,7 @@
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       "integrity": "sha1-XHHDTLW61dzr4+oM0IIHulqhrqQ=",
+      "optional": true,
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@@ -5325,6 +5603,7 @@
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           "integrity": "sha1-Ua99YUrZqfYQ6huvu5idaxxWiQ8=",
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@@ -5333,6 +5612,7 @@
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           "integrity": "sha1-fbCPnT0i3H945Trzw79GZuzfzPE=",
+          "optional": true,
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@@ -5351,6 +5631,7 @@
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       "integrity": "sha1-g3aHP30jNRef+x5vw6jtDfyKtVk=",
+      "optional": true,
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@@ -5360,6 +5641,7 @@
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           "integrity": "sha1-ex9YutpiyoJ+wKIHgCVlSEWZXh8=",
+          "optional": true,
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@@ -5370,6 +5652,7 @@
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               "integrity": "sha1-8GVWEJaj8dou9GJy+BXIQNh+DIk=",
+              "optional": true,
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@@ -5379,7 +5662,8 @@
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-          "integrity": "sha1-bWHeldkd/Km5oCCJrThL/49it3E="
+          "integrity": "sha1-bWHeldkd/Km5oCCJrThL/49it3E=",
+          "optional": true
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@@ -5407,12 +5691,14 @@
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       "resolved": "https://registry.npmjs.org/urix/-/urix-0.1.0.tgz",
-      "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI="
+      "integrity": "sha1-2pN/emLiH+wf0Y1Js1wpNQZ6bHI=",
+      "optional": true
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       "resolved": "https://registry.npmjs.org/use/-/use-3.1.1.tgz",
-      "integrity": "sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ=="
+      "integrity": "sha512-cwESVXlO3url9YWlFW/TA9cshCEhtu7IKJ/p5soJ/gGpj7vbvFrAY/eIioQ6Dw23KjZhYgiIo8HOs1nQ2vr/oQ==",
+      "optional": true
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diff --git a/package.json b/package.json
index c450747..eb6fcc5 100644
--- a/package.json
+++ b/package.json
@@ -18,7 +18,7 @@
     "connect-flash": "^0.1.1",
     "cookie-parser": "^1.4.3",
     "errorhandler": "^1.5.0",
-    "express": "^4.16.4",
+    "express": "^4.17.3",
     "express-device": "^0.4.2",
     "express-mysql-session": "^2.0.1",
     "express-routemap": "^1.1.0",