diff --git a/SchoolManagementSystem/package-lock.json b/SchoolManagementSystem/package-lock.json
index 0f83365..4052aa9 100644
--- a/SchoolManagementSystem/package-lock.json
+++ b/SchoolManagementSystem/package-lock.json
@@ -175,11 +175,6 @@
         "negotiator": "0.6.2"
       }
     },
-    "after": {
-      "version": "0.8.2",
-      "resolved": "https://registry.npmjs.org/after/-/after-0.8.2.tgz",
-      "integrity": "sha1-/ts5T58OAqqXaOcCvaI7UF+ufh8="
-    },
     "ajv": {
       "version": "6.10.2",
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.2.tgz",
@@ -233,11 +228,6 @@
       "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
       "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
     },
-    "arraybuffer.slice": {
-      "version": "0.0.6",
-      "resolved": "https://registry.npmjs.org/arraybuffer.slice/-/arraybuffer.slice-0.0.6.tgz",
-      "integrity": "sha1-8zshWfBTKj8xB6JywMz70a0peco="
-    },
     "asn1": {
       "version": "0.2.4",
       "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
@@ -285,9 +275,9 @@
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
     },
     "base64-arraybuffer": {
-      "version": "0.1.5",
-      "resolved": "https://registry.npmjs.org/base64-arraybuffer/-/base64-arraybuffer-0.1.5.tgz",
-      "integrity": "sha1-c5JncZI7Whl0etZmqlzUv5xunOg="
+      "version": "0.1.4",
+      "resolved": "https://registry.npmjs.org/base64-arraybuffer/-/base64-arraybuffer-0.1.4.tgz",
+      "integrity": "sha1-mBjHngWbE1X5fgQooBfIOOkLqBI="
     },
     "base64id": {
       "version": "2.0.0",
@@ -313,11 +303,6 @@
       "integrity": "sha512-Phlt0plgpIIBOGTT/ehfFnbNlfsDEiqmzE2KRXoX1bLIlir4X/MR+zSyBEkL05ffWgnRSf/DXv+WrUAVr93/ow==",
       "dev": true
     },
-    "blob": {
-      "version": "0.0.4",
-      "resolved": "https://registry.npmjs.org/blob/-/blob-0.0.4.tgz",
-      "integrity": "sha1-vPEwUspURj8w+fx+lbmkdjCpSSE="
-    },
     "bluebird": {
       "version": "3.5.1",
       "resolved": "https://registry.npmjs.org/bluebird/-/bluebird-3.5.1.tgz",
@@ -1034,82 +1019,45 @@
       }
     },
     "engine.io": {
-      "version": "3.0.0",
-      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-3.0.0.tgz",
-      "integrity": "sha1-/eD0YGhvCeKVvFWTNmPBzzd1mTM=",
-      "requires": {
-        "accepts": "1.3.3",
-        "base64id": "1.0.0",
-        "cookie": "0.3.1",
-        "debug": "2.3.3",
-        "engine.io-parser": "2.0.3",
-        "uws": "0.14.1",
-        "ws": "2.2.3"
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-4.1.2.tgz",
+      "integrity": "sha512-t5z6zjXuVLhXDMiFJPYsPOWEER8B0tIsD3ETgw19S1yg9zryvUfY3Vhtk3Gf4sihw/bQGIqQ//gjvVlu+Ca0bQ==",
+      "requires": {
+        "accepts": "~1.3.4",
+        "base64id": "2.0.0",
+        "cookie": "~0.4.1",
+        "cors": "~2.8.5",
+        "debug": "~4.3.1",
+        "engine.io-parser": "~4.0.0",
+        "ws": "~7.4.2"
       },
       "dependencies": {
-        "accepts": {
-          "version": "1.3.3",
-          "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.3.tgz",
-          "integrity": "sha1-w8p0NJOGSMPg2cHjKN1otiLChMo=",
-          "requires": {
-            "mime-types": "~2.1.11",
-            "negotiator": "0.6.1"
-          }
-        },
-        "base64id": {
-          "version": "1.0.0",
-          "resolved": "https://registry.npmjs.org/base64id/-/base64id-1.0.0.tgz",
-          "integrity": "sha1-R2iMuZu2gE8OBtPnY7HDLlfY5rY="
-        },
         "cookie": {
-          "version": "0.3.1",
-          "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.3.1.tgz",
-          "integrity": "sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s="
+          "version": "0.4.2",
+          "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.2.tgz",
+          "integrity": "sha512-aSWTXFzaKWkvHO1Ny/s+ePFpvKsPnjc551iI41v3ny/ow6tBG5Vd+FuqGNhh1LxOmVzOlGUriIlOaokOvhaStA=="
         },
         "debug": {
-          "version": "2.3.3",
-          "resolved": "https://registry.npmjs.org/debug/-/debug-2.3.3.tgz",
-          "integrity": "sha1-QMRT5n5uE8kB3ewxeviYbNqe/4w=",
+          "version": "4.3.3",
+          "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.3.tgz",
+          "integrity": "sha512-/zxw5+vh1Tfv+4Qn7a5nsbcJKPaSvCDhojn6FEl9vupwK2VCSDtEiEtqr8DFtzYFOdz63LBkxec7DYuc2jon6Q==",
           "requires": {
-            "ms": "0.7.2"
+            "ms": "2.1.2"
           }
         },
-        "ms": {
-          "version": "0.7.2",
-          "resolved": "https://registry.npmjs.org/ms/-/ms-0.7.2.tgz",
-          "integrity": "sha1-riXPJRKziFodldfwN4aNhDESR2U="
-        },
-        "negotiator": {
-          "version": "0.6.1",
-          "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.1.tgz",
-          "integrity": "sha1-KzJxhOiZIQEXeyhWP7XnECrNDKk="
-        },
-        "safe-buffer": {
-          "version": "5.0.1",
-          "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.0.1.tgz",
-          "integrity": "sha1-0mPKVGls2KMGtcplUekt5XkY++c="
-        },
         "ws": {
-          "version": "2.2.3",
-          "resolved": "https://registry.npmjs.org/ws/-/ws-2.2.3.tgz",
-          "integrity": "sha1-82yXGaVt/4E/RVr5EqIHgUW72UA=",
-          "requires": {
-            "safe-buffer": "~5.0.1",
-            "ultron": "~1.1.0"
-          }
+          "version": "7.4.6",
+          "resolved": "https://registry.npmjs.org/ws/-/ws-7.4.6.tgz",
+          "integrity": "sha512-YmhHDO4MzaDLB+M9ym/mDA5z0naX8j7SIlT8f8z+I0VtzsRbekxEutHSme7NPS2qE8StCYQNUnfWdXta/Yu85A=="
         }
       }
     },
     "engine.io-parser": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-2.0.3.tgz",
-      "integrity": "sha1-jYkGYJ1OdT/ujFsX+mFzW4m5he4=",
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-4.0.3.tgz",
+      "integrity": "sha512-xEAAY0msNnESNPc00e19y5heTPX4y/TJ36gr8t1voOaNmTojP9b3oK3BbJLFufW2XFPQaaijpFewm2g2Um3uqA==",
       "requires": {
-        "after": "0.8.2",
-        "arraybuffer.slice": "0.0.6",
-        "base64-arraybuffer": "0.1.5",
-        "blob": "0.0.4",
-        "has-binary2": "1.0.1"
+        "base64-arraybuffer": "0.1.4"
       }
     },
     "error-ex": {
@@ -1480,14 +1428,6 @@
         "function-bind": "^1.1.1"
       }
     },
-    "has-binary2": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/has-binary2/-/has-binary2-1.0.1.tgz",
-      "integrity": "sha1-JZnPQwKXx/6ua2PwpNLX3rZvB9s=",
-      "requires": {
-        "isarray": "2.0.1"
-      }
-    },
     "has-flag": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
@@ -1715,11 +1655,6 @@
       "resolved": "https://registry.npmjs.org/is-typedarray/-/is-typedarray-1.0.0.tgz",
       "integrity": "sha1-5HnICFjfDBsR3dppQPlgEfzaSpo="
     },
-    "isarray": {
-      "version": "2.0.1",
-      "resolved": "https://registry.npmjs.org/isarray/-/isarray-2.0.1.tgz",
-      "integrity": "sha1-o32U7ZzaLVmGXJ92/llu4fM4dB4="
-    },
     "isexe": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/isexe/-/isexe-2.0.0.tgz",
@@ -3478,11 +3413,6 @@
       "resolved": "https://registry.npmjs.org/uid2/-/uid2-0.0.3.tgz",
       "integrity": "sha1-SDEm4Rd03y9xuLY53NeZw3YWK4I="
     },
-    "ultron": {
-      "version": "1.1.1",
-      "resolved": "https://registry.npmjs.org/ultron/-/ultron-1.1.1.tgz",
-      "integrity": "sha512-UIEXBNeYmKptWH6z8ZnqTeS8fV74zG0/eRU9VGkpzz+LIJNs8W/zM/L+7ctCkRrgbNnnR0xxw4bKOr0cW0N0Og=="
-    },
     "uncontrollable": {
       "version": "7.1.1",
       "resolved": "https://registry.npmjs.org/uncontrollable/-/uncontrollable-7.1.1.tgz",
@@ -3590,12 +3520,6 @@
       "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.3.tgz",
       "integrity": "sha512-pW0No1RGHgzlpHJO1nsVrHKpOEIxkGg1xB+v0ZmdNH5OAeAwzAVrCnI2/6Mtx+Uys6iaylxa+D3g4j63IKKjSQ=="
     },
-    "uws": {
-      "version": "0.14.1",
-      "resolved": "https://registry.npmjs.org/uws/-/uws-0.14.1.tgz",
-      "integrity": "sha1-ibjre87ScsZWIUcuh4xX9ODgBkA=",
-      "optional": true
-    },
     "validate-npm-package-license": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
diff --git a/SchoolManagementSystem/package.json b/SchoolManagementSystem/package.json
index b3bcf99..bcf7bc7 100644
--- a/SchoolManagementSystem/package.json
+++ b/SchoolManagementSystem/package.json
@@ -20,7 +20,7 @@
     "config": "^3.2.5",
     "cors": "^2.8.5",
     "ejs": "^3.1.5",
-    "engine.io": "^3.0.0",
+    "engine.io": "^4.1.2",
     "express": "^4.17.1",
     "express-subdomain": "^1.0.5",
     "express-validator": "^6.3.1",