diff --git a/index.js b/index.js
index 6cebca02..77e1f945 100644
--- a/index.js
+++ b/index.js
@@ -17,6 +17,7 @@ function MetamaskInpageProvider (connectionStream) {
   const self = this
   self.selectedAddress = undefined
   self.networkVersion = undefined
+  self.chainId = undefined
 
   // super constructor
   SafeEventEmitter.call(self)
@@ -47,6 +48,12 @@ function MetamaskInpageProvider (connectionStream) {
       self.networkVersion = state.networkVersion
       self.emit('networkChanged', state.networkVersion)
     }
+
+    // Emit networkChanged event on network change
+    if ('chainId' in state && state.chainId !== self.chainId) {
+      self.chainId = state.chainId
+      self.emit('chainIdChanged', state.chainId)
+    }
   })
 
   pump(