diff --git a/package-lock.json b/package-lock.json
index c35bd5b..8f21a92 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,12 +4,35 @@
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+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.10.0.tgz",
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+        "fast-json-stable-stringify": "^2.0.0",
+        "json-schema-traverse": "^0.4.1",
+        "uri-js": "^4.2.2"
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+          "integrity": "sha1-ewUhjd+WZ79/Nwv3/bLLFf3Qqkk="
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+          "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz",
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       "integrity": "sha1-w2rsy6VjuJzrVW82kPCx2eNUf38=",
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+        "color-convert": "^1.9.0"
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@@ -37,29 +60,66 @@
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       "dev": true,
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+        "sprintf-js": "~1.0.2"
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+    "asn1": {
+      "version": "0.2.4",
+      "resolved": "https://registry.npmjs.org/asn1/-/asn1-0.2.4.tgz",
+      "integrity": "sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==",
+      "requires": {
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+      }
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+    "assert-plus": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/assert-plus/-/assert-plus-1.0.0.tgz",
+      "integrity": "sha1-8S4PPF13sLHN2RRpQuTpbB5N1SU="
+    },
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+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/asynckit/-/asynckit-0.4.0.tgz",
+      "integrity": "sha1-x57Zf380y48robyXkLzDZkdLS3k="
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+      "resolved": "https://registry.npmjs.org/aws-sign2/-/aws-sign2-0.7.0.tgz",
+      "integrity": "sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg="
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+      "resolved": "https://registry.npmjs.org/aws4/-/aws4-1.8.0.tgz",
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-      "version": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
       "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
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+      "resolved": "https://registry.npmjs.org/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz",
+      "integrity": "sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=",
+      "requires": {
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-        "content-type": "1.0.4",
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@@ -98,7 +158,7 @@
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-            "statuses": "1.3.1"
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@@ -174,7 +234,7 @@
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@@ -189,22 +249,23 @@
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-        "chalk": "2.1.0",
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-        "string-width": "2.1.1",
-        "term-size": "1.2.0",
-        "widest-line": "1.0.0"
+        "ansi-align": "^2.0.0",
+        "camelcase": "^4.0.0",
+        "chalk": "^2.0.1",
+        "cli-boxes": "^1.0.0",
+        "string-width": "^2.0.0",
+        "term-size": "^1.2.0",
+        "widest-line": "^1.0.0"
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     "brace-expansion": {
-      "version": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.8.tgz",
+      "version": "1.1.8",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.8.tgz",
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-        "concat-map": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz"
+        "balanced-match": "^1.0.0",
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@@ -212,14 +273,19 @@
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       "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0="
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+    "caseless": {
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+      "resolved": "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz",
+      "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw="
+    },
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-        "ansi-styles": "3.2.0",
-        "escape-string-regexp": "1.0.5",
-        "supports-color": "4.4.0"
+        "ansi-styles": "^3.1.0",
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+        "supports-color": "^4.0.0"
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       "dev": true,
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-        "restore-cursor": "1.0.1"
+        "restore-cursor": "^1.0.1"
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@@ -255,7 +321,7 @@
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@@ -270,7 +336,7 @@
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           "dev": true,
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+            "number-is-nan": "^1.0.0"
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@@ -279,9 +345,9 @@
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-            "is-fullwidth-code-point": "1.0.0",
-            "strip-ansi": "3.0.1"
+            "code-point-at": "^1.0.0",
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@@ -290,7 +356,7 @@
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@@ -305,7 +371,7 @@
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-        "color-name": "1.1.3"
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@@ -313,6 +379,14 @@
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       "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU="
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+    "combined-stream": {
+      "version": "1.0.7",
+      "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.7.tgz",
+      "integrity": "sha512-brWl9y6vOB1xYPZcpZde3N9zDByXTosAeMDo4p1wzo6UMOX4vumB+TP1RZ76sfE6Md68Q0NJSrE/gbezd4Ul+w==",
+      "requires": {
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@@ -320,24 +394,30 @@
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-      "version": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
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+      "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
       "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
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+      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
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-        "shebang-command": "1.2.0",
-        "which": "1.3.0"
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       "dev": true
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+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/delayed-stream/-/delayed-stream-1.0.0.tgz",
+      "integrity": "sha1-3zrhmayt+31ECqrgsp4icrJOxhk="
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+      "integrity": "sha1-OoOpBOVDUyh4dMVkt1SThoSamMk=",
+      "requires": {
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         "content-disposition": "0.5.2",
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-        "escape-html": "1.0.3",
-        "etag": "1.8.1",
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+        "encodeurl": "~1.0.1",
+        "escape-html": "~1.0.3",
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-            "statuses": "1.3.1",
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+            "escape-html": "~1.0.3",
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+            "parseurl": "~1.3.2",
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@@ -551,7 +653,7 @@
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+        "oauth-sign": "~0.9.0",
+        "performance-now": "^2.1.0",
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+        "uuid": "^3.3.2"
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-        "socket.io-parser": "3.1.2"
+        "debug": "~2.6.6",
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@@ -2059,10 +2338,10 @@
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@@ -2072,14 +2351,14 @@
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@@ -2092,7 +2371,7 @@
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@@ -2156,7 +2435,7 @@
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@@ -2164,7 +2443,7 @@
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@@ -2186,14 +2465,14 @@
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             "component-emitter": "1.2.1",
-            "debug": "2.6.9",
-            "engine.io-client": "3.1.3",
+            "debug": "~2.6.4",
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             "indexof": "0.0.1",
             "object-component": "0.0.3",
             "parseqs": "0.0.5",
             "parseuri": "0.0.5",
-            "socket.io-parser": "3.1.2",
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@@ -2203,8 +2482,8 @@
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-            "debug": "2.6.9",
-            "has-binary2": "1.0.2",
+            "debug": "~2.6.4",
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@@ -2229,8 +2508,8 @@
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-            "safe-buffer": "5.0.1",
-            "ultron": "1.1.0"
+            "safe-buffer": "~5.0.1",
+            "ultron": "~1.1.0"
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@@ -2251,6 +2530,22 @@
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       "dev": true
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+    "sshpk": {
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+      "resolved": "https://registry.npmjs.org/sshpk/-/sshpk-1.16.1.tgz",
+      "integrity": "sha512-HXXqVUq7+pcKeLqqZj6mHFUMvXtOJt1uoUx09pFW6011inTMxqI8BA8PM95myrIyyKwdnzjdFjLiE6KBPVtJIg==",
+      "requires": {
+        "asn1": "~0.2.3",
+        "assert-plus": "^1.0.0",
+        "bcrypt-pbkdf": "^1.0.0",
+        "dashdash": "^1.12.0",
+        "ecc-jsbn": "~0.1.1",
+        "getpass": "^0.1.1",
+        "jsbn": "~0.1.0",
+        "safer-buffer": "^2.0.2",
+        "tweetnacl": "~0.14.0"
+      }
+    },
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@@ -2268,8 +2563,8 @@
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       "requires": {
-        "is-fullwidth-code-point": "2.0.0",
-        "strip-ansi": "4.0.0"
+        "is-fullwidth-code-point": "^2.0.0",
+        "strip-ansi": "^4.0.0"
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@@ -2283,9 +2578,9 @@
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-        "get-own-enumerable-property-symbols": "2.0.1",
-        "is-obj": "1.0.1",
-        "is-regexp": "1.0.0"
+        "get-own-enumerable-property-symbols": "^2.0.1",
+        "is-obj": "^1.0.1",
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@@ -2293,7 +2588,7 @@
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       "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
       "requires": {
-        "ansi-regex": "3.0.0"
+        "ansi-regex": "^3.0.0"
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@@ -2312,10 +2607,10 @@
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-        "lodash.isplainobject": "4.0.6",
-        "object-assign": "4.1.1",
-        "qs": "6.0.4"
+        "bluebird": "^2.10.2",
+        "lodash.isplainobject": "^4.0.6",
+        "object-assign": "^4.1.0",
+        "qs": "~6.0.4"
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@@ -2345,7 +2640,7 @@
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       "requires": {
-        "has-flag": "2.0.0"
+        "has-flag": "^2.0.0"
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@@ -2359,7 +2654,59 @@
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       "integrity": "sha1-RYuDiH8oj8Vtb/+/rSYuJmOO+mk=",
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-        "execa": "0.7.0"
+        "execa": "^0.7.0"
+      }
+    },
+    "tough-cookie": {
+      "version": "2.4.3",
+      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.4.3.tgz",
+      "integrity": "sha512-Q5srk/4vDM54WJsJio3XNn6K2sCG+CQ8G5Wz6bZhRZoAe/+TxjWB/GlFAnYEbkYVlON9FMk/fE3h2RLpPXo4lQ==",
+      "requires": {
+        "psl": "^1.1.24",
+        "punycode": "^1.4.1"
+      },
+      "dependencies": {
+        "punycode": {
+          "version": "1.4.1",
+          "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.4.1.tgz",
+          "integrity": "sha1-wNWmOycYgArY4esPpSachN1BhF4="
+        }
+      }
+    },
+    "tunnel-agent": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
+      "integrity": "sha1-J6XeoGs2sEoKmWZ3SykIaPD8QP0=",
+      "requires": {
+        "safe-buffer": "^5.0.1"
+      }
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+    "tweetnacl": {
+      "version": "0.14.5",
+      "resolved": "https://registry.npmjs.org/tweetnacl/-/tweetnacl-0.14.5.tgz",
+      "integrity": "sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q="
+    },
+    "uri-js": {
+      "version": "4.2.2",
+      "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.2.2.tgz",
+      "integrity": "sha512-KY9Frmirql91X2Qgjry0Wd4Y+YTdrdZheS8TFwvkbLWf/G5KNJDCh6pKL5OZctEW4+0Baa5idK2ZQuELRwPznQ==",
+      "requires": {
+        "punycode": "^2.1.0"
+      }
+    },
+    "uuid": {
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.3.2.tgz",
+      "integrity": "sha512-yXJmeNaw3DnnKAOKJE51sL/ZaYfWJRl1pK9dr19YFCu0ObS231AB1/LbqTKRAQ5kw8A90rA6fr4riOUpTZvQZA=="
+    },
+    "verror": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/verror/-/verror-1.10.0.tgz",
+      "integrity": "sha1-OhBcoXBTr1XW4nDB+CiGguGNpAA=",
+      "requires": {
+        "assert-plus": "^1.0.0",
+        "core-util-is": "1.0.2",
+        "extsprintf": "^1.2.0"
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@@ -2367,7 +2714,7 @@
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       "requires": {
-        "isexe": "2.0.0"
+        "isexe": "^2.0.0"
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@@ -2375,7 +2722,7 @@
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-        "string-width": "1.0.2"
+        "string-width": "^1.0.1"
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@@ -2388,7 +2735,7 @@
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           "integrity": "sha1-754xOG8DGn8NZDr4L95QxFfvAMs=",
           "requires": {
-            "number-is-nan": "1.0.1"
+            "number-is-nan": "^1.0.0"
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@@ -2396,9 +2743,9 @@
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           "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
           "requires": {
-            "code-point-at": "1.1.0",
-            "is-fullwidth-code-point": "1.0.0",
-            "strip-ansi": "3.0.1"
+            "code-point-at": "^1.0.0",
+            "is-fullwidth-code-point": "^1.0.0",
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@@ -2406,7 +2753,7 @@
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-            "ansi-regex": "2.1.1"
+            "ansi-regex": "^2.0.0"
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       }
diff --git a/package.json b/package.json
index 90b011c..035fc38 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,7 @@
     "boxen": "^1.2.1",
     "express": "^4.15.3",
     "ngrok": "^2.2.11",
+    "request": "^2.88.0",
     "socket.io": "^2.0.3",
     "stripe": "^4.23.1"
   }
diff --git a/server.js b/server.js
index c2629a8..e15d443 100644
--- a/server.js
+++ b/server.js
@@ -9,6 +9,7 @@ const http = require("http");
 const bodyParser = require("body-parser");
 const path = require("path");
 const chalk = require("chalk");
+const request = require("request");
 
 /*
   We use two different Express servers for security reasons: our webhooks
@@ -54,14 +55,38 @@ webhooks.listen(webhooksPort, () => {
   console.log(`Listening for webhooks: http://localhost:${webhooksPort}`);
 });
 
-// Provides an endpoint to receive webhooks
-webhooks.post("/", async (req, res) => {
-  let event = req.body;
-  // Send a notification that we have a new event
-  // Here we're using Socket.io, but server-sent events or another mechanism can be used.
-  io.emit("event", event);
-  // Stripe needs to receive a 200 status from any webhooks endpoint
-  res.sendStatus(200);
+// Fetch valid Webhooks dispatch IPs 
+request.get({
+  url: "https://stripe.com/files/ips/ips_webhooks.json",
+  json: true
+}, (whitelistError, _, whitelistData) => {
+  if (whitelistError) {
+    console.log(
+      chalk.red(`Couldn't fetch Stripe's Webhooks dispatch whitelist: ${err}`)
+    );
+    process.exit(1);
+  }
+
+  // Provides an endpoint to receive webhooks
+  webhooks.post("/", async (request, response) => {
+    const whitelistedIps = whitelistData["WEBHOOKS"];
+    const deliveredByIp = request.headers['x-forwarded-for'];
+    
+    if (!whitelistedIps.includes(deliveredByIp)) {
+      // Did not receive this webhook from a whitelisted IP address
+      console.log(
+        chalk.red('Received webhook from a non-whitelisted IP, ignoring.')
+      );
+      return;
+    }
+
+    let event = request.body;
+    // Send a notification that we have a new event
+    // Here we're using Socket.io, but server-sent events or another mechanism can be used.
+    io.emit("event", event);
+    // Stripe needs to receive a 200 status from any webhooks endpoint
+    response.sendStatus(200);
+  });
 });
 
 // Use ngrok to provide a public URL for receiving webhooks