diff --git a/mock-server/package-lock.json b/mock-server/package-lock.json
index bc0a95cf..19ef1d68 100644
--- a/mock-server/package-lock.json
+++ b/mock-server/package-lock.json
@@ -732,6 +732,15 @@
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@@ -800,6 +819,25 @@
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+          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.1.tgz",
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+          "dev": true,
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+      "resolved": "https://registry.npmjs.org/@types/js-yaml/-/js-yaml-4.0.5.tgz",
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-      "requires": {
-        "sprintf-js": "~1.0.2"
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@@ -2616,6 +2651,15 @@
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+          "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
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+          "dev": true,
+          "requires": {
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@@ -2663,6 +2707,16 @@
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+          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.1.tgz",
+          "integrity": "sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==",
+          "dev": true,
+          "requires": {
+            "argparse": "^1.0.7",
+            "esprima": "^4.0.0"
+          }
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@@ -2852,7 +2906,7 @@
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-      "integrity": "sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k="
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@@ -3036,6 +3090,15 @@
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           }
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+        "argparse": {
+          "version": "1.0.10",
+          "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
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+          "dev": true,
+          "requires": {
+            "sprintf-js": "~1.0.2"
+          }
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@@ -3101,6 +3164,16 @@
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           "dev": true
         },
+        "js-yaml": {
+          "version": "3.14.1",
+          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.1.tgz",
+          "integrity": "sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==",
+          "dev": true,
+          "requires": {
+            "argparse": "^1.0.7",
+            "esprima": "^4.0.0"
+          }
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@@ -3292,7 +3365,8 @@
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+      "integrity": "sha512-eGuFFw7Upda+g4p+QHvnW0RyTX/SVeJBDM/gCtMARO0cLuT2HcEKnTPvhjV6aGeqrCB/sbNop0Kszm0jsaWU4A==",
+      "dev": true
     },
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@@ -3349,7 +3423,7 @@
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-      "integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc="
+      "integrity": "sha512-aIL5Fx7mawVa300al2BnEE4iNvo1qETxLrPI/o05L7z6go7fCw1J6EQmbK4FmJ2AS7kgVF/KEZWufBfdClMcPg=="
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@@ -3698,7 +3772,7 @@
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-      "integrity": "sha1-PYyt2Q2XZWn6g1qx+OSyOhBWBac="
+      "integrity": "sha512-zJ2mQYM18rEFOudeV4GShTGIQ7RbzA7ozbU9I/XBpm7kqgMywgmylMwXHxZJmkVoYkna9d2pVXVXPdYTP9ej8Q=="
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     "fs.realpath": {
       "version": "1.0.0",
@@ -4896,12 +4970,11 @@
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-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.1.tgz",
-      "integrity": "sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.0.tgz",
+      "integrity": "sha512-wpxZs9NoxZaJESJGIZTyDEaYpl0FKSA+FB9aJiyemKhMwkxQg63h4T1KJgUGHpTqPDNRcmmYLugrRjJlBtWvRA==",
       "requires": {
-        "argparse": "^1.0.7",
-        "esprima": "^4.0.0"
+        "argparse": "^2.0.1"
       }
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@@ -5176,7 +5249,7 @@
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-      "integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g="
+      "integrity": "sha512-dq+qelQ9akHpcOl/gUVRTxVIOkAJ1wR3QAvb4RsVjS8oVoFjDGTc679wJYmUmknUF5HwMLOgb5O+a3KxfWapPQ=="
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@@ -5248,7 +5321,7 @@
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-      "integrity": "sha1-sAqqVW3YtEVoFQ7J0blT8/kMu2E="
+      "integrity": "sha512-cCi6g3/Zr1iqQi6ySbseM1Xvooa98N0w31jzUYrXPX2xqObmFGHJ0tQ5u74H3mVh7wLouTseZyYIq39g8cNp1w=="
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@@ -5265,7 +5338,7 @@
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       "resolved": "https://registry.npmjs.org/methods/-/methods-1.1.2.tgz",
-      "integrity": "sha1-VSmk1nZUE07cxSZmVoNbD4Ua/O4="
+      "integrity": "sha512-iclAHeNqNm68zFtnZ0e+1L2yUIdvzNoauKU4WBA3VvH/vPFieF7qfRlwUZU+DA9P9bPXIS90ulxoUoCH23sV2w=="
     },
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@@ -5685,7 +5758,7 @@
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-      "integrity": "sha1-32BBeABfUi8V60SQ5yR6G/qmf4w="
+      "integrity": "sha512-5DFkuoqlv1uYQKxy8omFBeJPQcdoE07Kv2sferDCrAq1ohOU+MSDswDIbnx3YAM60qIOnYa53wBhXW0EbMonrQ=="
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@@ -6335,7 +6408,8 @@
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       "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
-      "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw="
+      "integrity": "sha512-D9cPgkvLlV3t3IzL0D0YLvGA9Ahk4PcvVwUbN0dSGr1aP0Nrt4AEnTUbuGvquEC0mA64Gqt1fzirlRs5ibXx8g==",
+      "dev": true
     },
     "stack-utils": {
       "version": "2.0.5",
@@ -6652,6 +6726,15 @@
             "color-convert": "^1.9.0"
           }
         },
+        "argparse": {
+          "version": "1.0.10",
+          "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
+          "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
+          "dev": true,
+          "requires": {
+            "sprintf-js": "~1.0.2"
+          }
+        },
         "builtin-modules": {
           "version": "1.1.1",
           "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-1.1.1.tgz",
@@ -6696,6 +6779,16 @@
           "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
           "dev": true
         },
+        "js-yaml": {
+          "version": "3.14.1",
+          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.1.tgz",
+          "integrity": "sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==",
+          "dev": true,
+          "requires": {
+            "argparse": "^1.0.7",
+            "esprima": "^4.0.0"
+          }
+        },
         "minimist": {
           "version": "1.2.5",
           "resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.5.tgz",
@@ -6800,7 +6893,7 @@
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       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
-      "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw="
+      "integrity": "sha512-pjy2bYhSsufwWlKwPc+l3cN7+wuJlK6uz0YdJEOlQDbl6jo/YlPi4mb8agUkVC8BF7V8NuzeyPNqRksA3hztKQ=="
     },
     "update-notifier": {
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@@ -6855,7 +6948,7 @@
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       "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
-      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
+      "integrity": "sha512-pMZTvIkT1d+TFGvDOqodOclx0QWkkgi6Tdoa8gC8ffGAAqz9pzPTZWAybbsHHoED/ztMtkv/VoYTYyShUn81hA=="
     },
     "v8-compile-cache": {
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@@ -6895,7 +6988,7 @@
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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=="
     },
     "w3c-hr-time": {
       "version": "1.0.2",
diff --git a/mock-server/package.json b/mock-server/package.json
index 533d6a3d..dfb59946 100755
--- a/mock-server/package.json
+++ b/mock-server/package.json
@@ -28,7 +28,7 @@
     "errorhandler": "1.5.1",
     "express": "4.17.1",
     "json-schema-ref-parser": "9.0.9",
-    "js-yaml": "3.14.1",
+    "js-yaml": "4.1.0",
     "morgan": "1.10.0",
     "openapi-backend": "3.9.2",
     "source-map-support": "0.5.21",
@@ -37,7 +37,7 @@
   "devDependencies": {
     "@types/errorhandler": "1.5.0",
     "@types/jest": "27.4.0",
-    "@types/js-yaml": "3.12.7",
+    "@types/js-yaml": "4.0.5",
     "@types/json-schema": "7.0.9",
     "@types/morgan": "1.9.3",
     "@types/node": "11.15.53",
diff --git a/package-lock.json b/package-lock.json
index 32b446f7..a0dd7de9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,6 +12,17 @@
         "@jsdevtools/ono": "^7.1.0",
         "call-me-maybe": "^1.0.1",
         "js-yaml": "^3.13.1"
+      },
+      "dependencies": {
+        "js-yaml": {
+          "version": "3.14.1",
+          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.1.tgz",
+          "integrity": "sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==",
+          "requires": {
+            "argparse": "^1.0.7",
+            "esprima": "^4.0.0"
+          }
+        }
       }
     },
     "@apidevtools/openapi-schemas": {
@@ -139,6 +150,18 @@
         "js-yaml": "^3.13.1",
         "minimatch": "^3.0.4",
         "strip-json-comments": "^3.1.1"
+      },
+      "dependencies": {
+        "js-yaml": {
+          "version": "3.14.1",
+          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.14.1.tgz",
+          "integrity": "sha512-okMH7OXXJ7YrN9Ok3/SXrnu4iX9yOk+25nqX4imS2npuvTYDmo/QEZoqwZkYaIDk3jVvBOTOIEgEhaLOynBS9g==",
+          "dev": true,
+          "requires": {
+            "argparse": "^1.0.7",
+            "esprima": "^4.0.0"
+          }
+        }
       }
     },
     "@hapi/hoek": {
@@ -300,9 +323,9 @@
       }
     },
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-      "version": "3.12.7",
-      "resolved": "https://registry.npmjs.org/@types/js-yaml/-/js-yaml-3.12.7.tgz",
-      "integrity": "sha512-S6+8JAYTE1qdsc9HMVsfY7+SgSuUU/Tp6TYTmITW0PZxiyIMvol3Gy//y69Wkhs0ti4py5qgR3uZH6uz/DNzJQ==",
+      "version": "4.0.5",
+      "resolved": "https://registry.npmjs.org/@types/js-yaml/-/js-yaml-4.0.5.tgz",
+      "integrity": "sha512-FhpRzf927MNQdRZP0J5DLIdTXhjLYzeUTmLAu69mnVksLH9CJY3IuSeEgbKUki7GQZm0WqDkGzyxju2EZGD2wA==",
       "dev": true
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     "@types/json-schema": {
@@ -898,6 +921,15 @@
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-      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
+      "integrity": "sha512-pMZTvIkT1d+TFGvDOqodOclx0QWkkgi6Tdoa8gC8ffGAAqz9pzPTZWAybbsHHoED/ztMtkv/VoYTYyShUn81hA=="
     },
     "uuid": {
       "version": "3.4.0",
@@ -12293,7 +12392,7 @@
     "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",
diff --git a/package.json b/package.json
index 3242932f..3ffb343f 100755
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
     "content-type": "1.0.4",
     "debug": "4.3.3",
     "express": "4.17.1",
-    "js-yaml": "3.14.1",
+    "js-yaml": "4.1.0",
     "json-schema-ref-parser": "9.0.9",
     "lodash": "4.17.21",
     "openapi-backend": "3.9.2",
@@ -69,7 +69,7 @@
     "@types/chai": "4.3.0",
     "@types/content-type": "1.1.5",
     "@types/debug": "4.1.7",
-    "@types/js-yaml": "3.12.7",
+    "@types/js-yaml": "4.0.5",
     "@types/json-schema": "7.0.9",
     "@types/lodash.merge": "4.6.6",
     "@types/mocha": "9.1.0",