diff --git a/ethereum/source/nodejs-demo/package-lock.json b/ethereum/source/nodejs-demo/package-lock.json
index f5b6938..e6d1d05 100644
--- a/ethereum/source/nodejs-demo/package-lock.json
+++ b/ethereum/source/nodejs-demo/package-lock.json
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@@ -3907,11 +3870,6 @@
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-      "integrity": "sha1-OS2LotDxw00e4tYw8V0O+2jhBIo="
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diff --git a/ethereum/source/nodejs-demo/package.json b/ethereum/source/nodejs-demo/package.json
index 44110f2..4d3d833 100644
--- a/ethereum/source/nodejs-demo/package.json
+++ b/ethereum/source/nodejs-demo/package.json
@@ -14,7 +14,7 @@
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 		"hooked-web3-provider": "^1.0.0",
 		"keythereum": "^1.0.4",
-		"socket.io": "1.6.0",
+		"socket.io": "2.4.0",
 		"solc": "0.4.8",
 		"truffle-contract": "^3.0.6",
 		"web3": "0.16.0"