diff --git a/ethereum/source/nodejs-demo/package-lock.json b/ethereum/source/nodejs-demo/package-lock.json
index f5b6938..3229ba6 100644
--- a/ethereum/source/nodejs-demo/package-lock.json
+++ b/ethereum/source/nodejs-demo/package-lock.json
@@ -4,6 +4,26 @@
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-      "version": "git+https://github.com/debris/bignumber.js.git#c7a38de919ed75e6fb6ba38051986e294b328df9"
+      "version": "git+https://github.com/debris/bignumber.js.git#c7a38de919ed75e6fb6ba38051986e294b328df9",
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@@ -1427,7 +1347,8 @@
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@@ -1445,11 +1366,13 @@
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@@ -1462,15 +1385,18 @@
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@@ -1573,7 +1499,8 @@
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@@ -3762,7 +3595,8 @@
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+          "version": "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934",
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 }
diff --git a/ethereum/source/nodejs-demo/package.json b/ethereum/source/nodejs-demo/package.json
index 44110f2..801a282 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": "4.5.3",
 		"solc": "0.4.8",
 		"truffle-contract": "^3.0.6",
 		"web3": "0.16.0"