diff --git a/chapter-11/petstore/package-lock.json b/chapter-11/petstore/package-lock.json
index 53c6182..95a1d19 100644
--- a/chapter-11/petstore/package-lock.json
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@@ -11811,6 +12151,17 @@
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@@ -12623,6 +12974,11 @@
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@@ -13665,6 +14020,137 @@
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+          "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.13.2.tgz",
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+          "dev": true,
+          "requires": {
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+            "escape-html": "~1.0.3",
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diff --git a/chapter-11/petstore/package.json b/chapter-11/petstore/package.json
index cdf6fea..a1e8f15 100644
--- a/chapter-11/petstore/package.json
+++ b/chapter-11/petstore/package.json
@@ -42,7 +42,7 @@
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     "cssnano": "^3.10.0",
     "eventsource-polyfill": "^0.9.6",
-    "express": "^4.14.1",
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     "extract-text-webpack-plugin": "^2.0.0",
     "file-loader": "^0.11.1",
     "friendly-errors-webpack-plugin": "^1.1.3",