diff --git a/hospital-front-end/package-lock.json b/hospital-front-end/package-lock.json
index 32676c4..7be433f 100644
--- a/hospital-front-end/package-lock.json
+++ b/hospital-front-end/package-lock.json
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@@ -16149,12 +16328,13 @@
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-      "integrity": "sha1-DK+dLXVdk67gSdS90NP+LMoqJOs=",
+      "version": "0.7.4",
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       "dev": true,
       "requires": {
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+        "http-parser-js": ">=0.5.1",
+        "safe-buffer": ">=5.1.0",
         "websocket-extensions": ">=0.1.1"
       }
     },
diff --git a/hospital-front-end/package.json b/hospital-front-end/package.json
index 7f8acbb..6b4ad34 100644
--- a/hospital-front-end/package.json
+++ b/hospital-front-end/package.json
@@ -86,7 +86,7 @@
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     "webpack": "^3.6.0",
     "webpack-bundle-analyzer": "^3.3.2",
-    "webpack-dev-server": "^2.9.1",
+    "webpack-dev-server": "^3.1.11",
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   },
   "engines": {