diff --git a/06-indexing-and-storage/01-indexing/package-lock.json b/06-indexing-and-storage/01-indexing/package-lock.json
index 65339c9..e5a3abf 100644
--- a/06-indexing-and-storage/01-indexing/package-lock.json
+++ b/06-indexing-and-storage/01-indexing/package-lock.json
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+      "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.7.tgz",
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-        "ipaddr.js": "1.8.0"
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@@ -4287,9 +4395,9 @@
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-      "integrity": "sha1-9JvmtIeJTdxA3MlKMi9hEJLgDV4="
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+      "resolved": "https://registry.npmjs.org/send/-/send-0.17.2.tgz",
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@@ -4530,30 +4638,52 @@
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-        "mime": "1.4.1",
-        "ms": "2.0.0",
+        "http-errors": "1.8.1",
+        "mime": "1.6.0",
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-        "range-parser": "~1.2.0",
-        "statuses": "~1.4.0"
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+        "http-errors": {
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+          "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.8.1.tgz",
+          "integrity": "sha512-Kpk9Sm7NmI+RHhnj6OIWDI1d6fIoFAtFt9RLaTMRlg/8w49juAStsrBgp0Dp4OdxdVbRIeKhtCUvoi/RuAhO4g==",
+          "requires": {
+            "depd": "~1.1.2",
+            "inherits": "2.0.4",
+            "setprototypeof": "1.2.0",
+            "statuses": ">= 1.5.0 < 2",
+            "toidentifier": "1.0.1"
+          }
+        },
+        "inherits": {
+          "version": "2.0.4",
+          "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
+          "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ=="
+        },
+        "ms": {
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+          "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
+          "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA=="
+        },
+        "setprototypeof": {
+          "version": "1.2.0",
+          "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.2.0.tgz",
+          "integrity": "sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw=="
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-      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.13.2.tgz",
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+      "version": "1.14.2",
+      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.14.2.tgz",
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         "escape-html": "~1.0.3",
-        "parseurl": "~1.3.2",
-        "send": "0.16.2"
+        "parseurl": "~1.3.3",
+        "send": "0.17.2"
       }
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     "servify": {
@@ -5142,6 +5272,11 @@
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       }
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+    "toidentifier": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
+      "integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA=="
+    },
     "tough-cookie": {
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       "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.4.3.tgz",
@@ -5350,7 +5485,7 @@
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-      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
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diff --git a/06-indexing-and-storage/01-indexing/package.json b/06-indexing-and-storage/01-indexing/package.json
index b13d41e..0735d28 100644
--- a/06-indexing-and-storage/01-indexing/package.json
+++ b/06-indexing-and-storage/01-indexing/package.json
@@ -10,7 +10,7 @@
   "author": "spalladino@gmail.com",
   "dependencies": {
     "bignumber.js": "8.1.1",
-    "express": "^4.16.4",
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     "lodash.chunk": "^4.2.0",
     "lodash.last": "^3.0.0",
     "lodash.mapvalues": "^4.6.0",