diff --git a/package-lock.json b/package-lock.json
index affaff6..e3585df 100644
--- a/package-lock.json
+++ b/package-lock.json
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@@ -1259,7 +1269,7 @@
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@@ -1568,17 +1699,24 @@
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@@ -1677,7 +1815,8 @@
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@@ -1695,11 +1834,13 @@
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@@ -1712,15 +1853,18 @@
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@@ -1823,7 +1967,8 @@
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@@ -1845,17 +1991,20 @@
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@@ -1872,6 +2021,7 @@
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@@ -1944,7 +2094,8 @@
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@@ -2029,7 +2181,8 @@
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@@ -2059,6 +2212,7 @@
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@@ -2076,6 +2230,7 @@
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@@ -2114,11 +2269,13 @@
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-      "integrity": "sha1-/CidTtiZMRlGDBViUyYs3I3mW/M="
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+      "resolved": "https://registry.npmjs.org/parseurl/-/parseurl-1.3.3.tgz",
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@@ -3584,7 +3741,7 @@
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-      "integrity": "sha1-32BBeABfUi8V60SQ5yR6G/qmf4w="
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@@ -3653,12 +3810,12 @@
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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": "1.8.0"
+        "forwarded": "0.2.0",
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@@ -3828,9 +3985,9 @@
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-      "integrity": "sha1-9JvmtIeJTdxA3MlKMi9hEJLgDV4="
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/range-parser/-/range-parser-1.2.1.tgz",
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@@ -4119,9 +4276,9 @@
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-      "resolved": "https://registry.npmjs.org/send/-/send-0.16.2.tgz",
-      "integrity": "sha512-E64YFPUssFHEFBvpbbjr44NCLtI1AohxQ8ZSiJjQLskAdKuriYEP6VyGEsRDH8ScozGpkaX1BGvhanqCwkcEZw==",
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+      "resolved": "https://registry.npmjs.org/send/-/send-0.17.2.tgz",
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@@ -4130,23 +4287,57 @@
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         "fresh": "0.5.2",
-        "http-errors": "~1.6.2",
-        "mime": "1.4.1",
-        "ms": "2.0.0",
+        "http-errors": "1.8.1",
+        "mime": "1.6.0",
+        "ms": "2.1.3",
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-        "range-parser": "~1.2.0",
-        "statuses": "~1.4.0"
+        "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": {
+            "depd": "~1.1.2",
+            "inherits": "2.0.4",
+            "setprototypeof": "1.2.0",
+            "statuses": ">= 1.5.0 < 2",
+            "toidentifier": "1.0.1"
+          }
+        },
+        "inherits": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+        },
+        "ms": {
+          "version": "2.1.3",
+          "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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-      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.13.2.tgz",
-      "integrity": "sha512-p/tdJrO4U387R9oMjb1oj7qSMaMfmOyd4j9hOFoxZe2baQszgHcSWjuya/CiT5kgZZKRudHNOA0pYXOl8rQ5nw==",
+      "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": "~1.3.2",
-        "send": "0.16.2"
+        "parseurl": "~1.3.3",
+        "send": "0.17.2"
       }
     },
     "set-blocking": {
@@ -4682,6 +4873,11 @@
         "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=="
+    },
     "touch": {
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       "resolved": "https://registry.npmjs.org/touch/-/touch-3.1.0.tgz",
@@ -4925,7 +5121,7 @@
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-      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
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diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index e0c5f5c..4c5cb6f
--- a/package.json
+++ b/package.json
@@ -11,7 +11,7 @@
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     "cors": "^2.8.5",
     "dotenv": "^7.0.0",
-    "express": "^4.16.3",
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     "express-oas-generator": "^1.0.7",
     "immutability-helper": "^3.0.0",
     "jsonwebtoken": "^8.5.1",