diff --git a/package-lock.json b/package-lock.json
index dae5e88..68d2a05 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -129,12 +129,27 @@
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+          "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.35.tgz",
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@@ -170,7 +228,7 @@
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-      "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
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@@ -185,6 +243,11 @@
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+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.4.tgz",
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@@ -234,6 +297,42 @@
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+        "inherits": "^2.0.4",
+        "readable-stream": "^3.4.0"
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+          "requires": {
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+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
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+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
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@@ -270,6 +369,11 @@
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@@ -298,6 +402,29 @@
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+      "resolved": "https://registry.npmjs.org/compress-commons/-/compress-commons-4.1.1.tgz",
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+        "crc32-stream": "^4.0.2",
+        "normalize-path": "^3.0.0",
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+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
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@@ -309,11 +436,18 @@
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+      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.4.tgz",
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       "requires": {
-        "safe-buffer": "5.1.2"
+        "safe-buffer": "5.2.1"
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+        }
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@@ -345,6 +479,32 @@
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       "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
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+    "crc-32": {
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+      "resolved": "https://registry.npmjs.org/crc-32/-/crc-32-1.2.2.tgz",
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+    },
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+      "resolved": "https://registry.npmjs.org/crc32-stream/-/crc32-stream-4.0.2.tgz",
+      "integrity": "sha512-DxFZ/Hk473b/muq1VJ///PMNLj0ZMnzye9thBpmjpJKCc5eMgB95aK8zCGrGfQ90cWo561Te6HK9D+j4KPdM6w==",
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@@ -384,7 +544,7 @@
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-      "integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
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@@ -408,17 +568,25 @@
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-      "integrity": "sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k="
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+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.4.tgz",
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+      "requires": {
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-      "integrity": "sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg="
+      "integrity": "sha512-NiSupZ4OeuGwr68lGIeym/ksIZMJodUGOSCZ/FSnTxcrekbvqrgdUxlJOMpijaKZVjAJrWrGs/6Jy8OMuyj9ow=="
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-      "integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc="
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@@ -426,16 +594,16 @@
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+      "resolved": "https://registry.npmjs.org/express/-/express-4.17.3.tgz",
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-        "accepts": "~1.3.7",
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-        "body-parser": "1.19.0",
-        "content-disposition": "0.5.3",
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@@ -449,23 +617,93 @@
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         "utils-merge": "1.0.1",
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@@ -768,6 +1011,39 @@
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@@ -880,9 +1156,9 @@
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@@ -919,6 +1195,11 @@
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@@ -1029,12 +1310,12 @@
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+      "version": "2.0.7",
+      "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz",
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-        "forwarded": "~0.1.2",
-        "ipaddr.js": "1.9.0"
+        "forwarded": "0.2.0",
+        "ipaddr.js": "1.9.1"
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     "psl": {
@@ -1098,6 +1379,32 @@
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+          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-5.1.1.tgz",
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@@ -1171,9 +1478,9 @@
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@@ -1182,30 +1489,57 @@
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         "etag": "~1.8.1",
         "fresh": "0.5.2",
-        "http-errors": "~1.7.2",
+        "http-errors": "1.8.1",
         "mime": "1.6.0",
-        "ms": "2.1.1",
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         "on-finished": "~2.3.0",
         "range-parser": "~1.2.1",
         "statuses": "~1.5.0"
       },
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+          "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.8.1.tgz",
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+          "requires": {
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+            "inherits": "2.0.4",
+            "setprototypeof": "1.2.0",
+            "statuses": ">= 1.5.0 < 2",
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+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
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+          "version": "2.1.3",
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+        },
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+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.2.0.tgz",
+          "integrity": "sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw=="
+        },
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+          "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": "1.14.2",
+      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.14.2.tgz",
+      "integrity": "sha512-+TMNA9AFxUEGuC0z2mevogSnn9MXKb4fa7ngeRMJaaGv8vTwnIEkKi+QGvPt33HSnf8pRS+WGM0EbMtCJLKMBQ==",
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         "escape-html": "~1.0.3",
         "parseurl": "~1.3.3",
-        "send": "0.17.1"
+        "send": "0.17.2"
       }
     },
     "set-blocking": {
@@ -1299,6 +1633,30 @@
         "yallist": "^3.0.3"
       }
     },
+    "tar-stream": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/tar-stream/-/tar-stream-2.2.0.tgz",
+      "integrity": "sha512-ujeqbceABgwMZxEJnk2HDY2DlnUZ+9oEcb1KzTVfYHio0UE6dG71n60d8D2I4qNvleWrrXpmjpt7vZeF1LnMZQ==",
+      "requires": {
+        "bl": "^4.0.3",
+        "end-of-stream": "^1.4.1",
+        "fs-constants": "^1.0.0",
+        "inherits": "^2.0.3",
+        "readable-stream": "^3.1.1"
+      },
+      "dependencies": {
+        "readable-stream": {
+          "version": "3.6.0",
+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
+          "integrity": "sha512-BViHy7LKeTz4oNnkcLJ+lVSL6vpiFeX6/d3oSH8zCW7UxP2onchk+vTGB143xuFjHS3deTgkKoXXymXqymiIdA==",
+          "requires": {
+            "inherits": "^2.0.3",
+            "string_decoder": "^1.1.1",
+            "util-deprecate": "^1.0.1"
+          }
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     "toidentifier": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.0.tgz",
@@ -1384,7 +1742,7 @@
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-      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
+      "integrity": "sha512-pMZTvIkT1d+TFGvDOqodOclx0QWkkgi6Tdoa8gC8ffGAAqz9pzPTZWAybbsHHoED/ztMtkv/VoYTYyShUn81hA=="
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@@ -1394,7 +1752,7 @@
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       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
-      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
+      "integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg=="
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@@ -1437,6 +1795,28 @@
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+    },
+    "zip-stream": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/zip-stream/-/zip-stream-4.1.0.tgz",
+      "integrity": "sha512-zshzwQW7gG7hjpBlgeQP9RuyPGNxvJdzR8SUM3QhxCnLjWN2E7j3dOvpeDcQoETfHx0urRS7EtmVToql7YpU4A==",
+      "requires": {
+        "archiver-utils": "^2.1.0",
+        "compress-commons": "^4.1.0",
+        "readable-stream": "^3.6.0"
+      },
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+          "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-3.6.0.tgz",
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+          "requires": {
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     }
   }
 }
diff --git a/package.json b/package.json
index d162d22..b0f3838 100644
--- a/package.json
+++ b/package.json
@@ -23,7 +23,7 @@
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     "body-parser": "^1.19.0",
     "cookie-parser": "^1.4.5",
-    "express": "^4.17.1",
+    "express": "^4.17.3",
     "fs-extra": "^2.0.0",
     "archiver": "5.3.1",
     "glob": "^7.1.6",