diff --git a/package-lock.json b/package-lock.json
index a384739..49e0238 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -211,13 +211,39 @@
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-      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.0.1.tgz",
-      "integrity": "sha1-KJhYCp8971+chd/q16IiPvE889o=",
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-        "fast-deep-equal": "1.0.0",
-        "fast-json-stable-stringify": "2.0.0",
-        "json-schema-traverse": "0.3.1"
+      "version": "6.12.3",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.3.tgz",
+      "integrity": "sha512-4K0cK3L1hsqk9xIb2z9vs/XU+PGJZ9PNpJRDS9YLzmNdX6jmVPfamLvTJr0aDAusnHyCHO6MjzlkAsgtqp9teA==",
+      "requires": {
+        "fast-deep-equal": "^3.1.1",
+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.4.1",
+        "uri-js": "^4.2.2"
+      },
+      "dependencies": {
+        "fast-deep-equal": {
+          "version": "3.1.3",
+          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
+          "integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q=="
+        },
+        "json-schema-traverse": {
+          "version": "0.4.1",
+          "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz",
+          "integrity": "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg=="
+        },
+        "punycode": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
+          "integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A=="
+        },
+        "uri-js": {
+          "version": "4.4.1",
+          "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.1.tgz",
+          "integrity": "sha512-7rKUyy33Q1yc98pQ1DAmLtwX109F7TIfWlW1Ydo8Wl1ii1SeHieeh0HHfPeL2fMXK6z0s8ecKs9frCuLJvndBg==",
+          "requires": {
+            "punycode": "^2.1.0"
+          }
+        }
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     },
     "ajv-keywords": {
@@ -231,6 +257,7 @@
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       "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
       "dev": true,
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@@ -1383,6 +1410,7 @@
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           "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
           "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
+          "optional": true,
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@@ -2280,7 +2308,8 @@
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-          "integrity": "sha1-Hzsm72E7IUuIy8ojzGwB2Hlh7sw="
+          "integrity": "sha1-Hzsm72E7IUuIy8ojzGwB2Hlh7sw=",
+          "optional": true
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@@ -2576,6 +2605,7 @@
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           "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
+          "optional": true,
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@@ -2615,7 +2645,8 @@
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           "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
-          "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc="
+          "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
+          "optional": true
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@@ -2842,6 +2873,7 @@
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               "resolved": "https://registry.npmjs.org/align-text/-/align-text-0.1.4.tgz",
               "integrity": "sha1-DNkKVhCT810KmSVsIrcGlDP60Rc=",
+              "optional": true,
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@@ -3634,7 +3666,8 @@
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-              "integrity": "sha1-Hzsm72E7IUuIy8ojzGwB2Hlh7sw="
+              "integrity": "sha1-Hzsm72E7IUuIy8ojzGwB2Hlh7sw=",
+              "optional": true
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@@ -3830,6 +3863,7 @@
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               "integrity": "sha1-MeohpzS6ubuw8yRm2JOupR5KPGQ=",
+              "optional": true,
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@@ -4299,7 +4333,8 @@
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               "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
-              "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc="
+              "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
+              "optional": true
             },
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@@ -4718,7 +4753,8 @@
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               "resolved": "https://registry.npmjs.org/repeat-string/-/repeat-string-1.6.1.tgz",
-              "integrity": "sha1-jcrkcOHIirwtYA//Sndihtp15jc="
+              "integrity": "sha1-jcrkcOHIirwtYA//Sndihtp15jc=",
+              "optional": true
             },
             "require-uncached": {
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@@ -5293,7 +5329,8 @@
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           "resolved": "https://registry.npmjs.org/repeat-string/-/repeat-string-1.6.1.tgz",
-          "integrity": "sha1-jcrkcOHIirwtYA//Sndihtp15jc="
+          "integrity": "sha1-jcrkcOHIirwtYA//Sndihtp15jc=",
+          "optional": true
         },
         "request": {
           "version": "2.81.0",
@@ -7095,7 +7132,8 @@
         "ansi-regex": {
           "version": "2.1.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "aproba": {
           "version": "1.1.1",
@@ -7146,7 +7184,8 @@
         "balanced-match": {
           "version": "0.4.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "bcrypt-pbkdf": {
           "version": "1.0.1",
@@ -7161,6 +7200,7 @@
           "version": "0.0.9",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "inherits": "2.0.3"
           }
@@ -7169,6 +7209,7 @@
           "version": "2.10.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "hoek": "2.16.3"
           }
@@ -7177,6 +7218,7 @@
           "version": "1.1.7",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
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@@ -7185,7 +7227,8 @@
         "buffer-shims": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "caseless": {
           "version": "0.12.0",
@@ -7202,12 +7245,14 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "combined-stream": {
           "version": "1.0.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "delayed-stream": "1.0.0"
           }
@@ -7215,22 +7260,26 @@
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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         "core-util-is": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "cryptiles": {
           "version": "2.0.5",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "boom": "2.10.1"
           }
@@ -7270,7 +7319,8 @@
         "delayed-stream": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "delegates": {
           "version": "1.0.0",
@@ -7302,7 +7352,8 @@
         "extsprintf": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "forever-agent": {
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@@ -7324,12 +7375,14 @@
         "fs.realpath": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "fstream": {
           "version": "1.0.11",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "graceful-fs": "4.1.11",
             "inherits": "2.0.3",
@@ -7385,6 +7438,7 @@
           "version": "7.1.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "fs.realpath": "1.0.0",
             "inflight": "1.0.6",
@@ -7397,7 +7451,8 @@
         "graceful-fs": {
           "version": "4.1.11",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "har-schema": {
           "version": "1.0.5",
@@ -7425,6 +7480,7 @@
           "version": "3.1.3",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "boom": "2.10.1",
             "cryptiles": "2.0.5",
@@ -7435,7 +7491,8 @@
         "hoek": {
           "version": "2.16.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "http-signature": {
           "version": "1.1.1",
@@ -7452,6 +7509,7 @@
           "version": "1.0.6",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "once": "1.4.0",
             "wrappy": "1.0.2"
@@ -7460,7 +7518,8 @@
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "ini": {
           "version": "1.3.4",
@@ -7472,6 +7531,7 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "number-is-nan": "1.0.1"
           }
@@ -7485,7 +7545,8 @@
         "isarray": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
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           "version": "0.1.2",
@@ -7558,12 +7619,14 @@
         "mime-db": {
           "version": "1.27.0",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "mime-types": {
           "version": "2.1.15",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "mime-db": "1.27.0"
           }
@@ -7572,6 +7635,7 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "brace-expansion": "1.1.7"
           }
@@ -7579,12 +7643,14 @@
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -7639,7 +7705,8 @@
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "oauth-sign": {
           "version": "0.8.2",
@@ -7657,6 +7724,7 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "wrappy": "1.0.2"
           }
@@ -7686,7 +7754,8 @@
         "path-is-absolute": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "performance-now": {
           "version": "0.2.0",
@@ -7697,7 +7766,8 @@
         "process-nextick-args": {
           "version": "1.0.7",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "punycode": {
           "version": "1.4.1",
@@ -7735,6 +7805,7 @@
           "version": "2.2.9",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "buffer-shims": "1.0.0",
             "core-util-is": "1.0.2",
@@ -7779,6 +7850,7 @@
           "version": "2.6.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "glob": "7.1.2"
           }
@@ -7786,7 +7858,8 @@
         "safe-buffer": {
           "version": "5.0.1",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "semver": {
           "version": "5.3.0",
@@ -7810,6 +7883,7 @@
           "version": "1.0.9",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "hoek": "2.16.3"
           }
@@ -7843,6 +7917,7 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "code-point-at": "1.1.0",
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@@ -7853,6 +7928,7 @@
           "version": "1.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "safe-buffer": "5.0.1"
           }
@@ -7867,6 +7943,7 @@
           "version": "3.0.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "ansi-regex": "2.1.1"
           }
@@ -7881,6 +7958,7 @@
           "version": "2.2.1",
           "bundled": true,
           "dev": true,
+          "optional": true,
           "requires": {
             "block-stream": "0.0.9",
             "fstream": "1.0.11",
@@ -7936,7 +8014,8 @@
         "util-deprecate": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
         },
         "uuid": {
           "version": "3.0.1",
@@ -7965,7 +8044,8 @@
         "wrappy": {
           "version": "1.0.2",
           "bundled": true,
-          "dev": true
+          "dev": true,
+          "optional": true
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@@ -10435,7 +10515,8 @@
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/longest/-/longest-1.0.1.tgz",
       "integrity": "sha1-MKCy2jj3N3DoKUoNIuZiXtd9AJc=",
-      "dev": true
+      "dev": true,
+      "optional": true
     },
     "loose-envify": {
       "version": "1.3.1",
diff --git a/package.json b/package.json
index 6b92d52..312cc6d 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   },
   "homepage": "https://github.com/chekkan/bizhub-api#readme",
   "dependencies": {
-    "ajv": "^6.0.1",
+    "ajv": "^6.12.3",
     "jsonwebtoken": "^8.1.0",
     "jwks-rsa": "^1.2.0",
     "mongodb": "^3.0.1"