diff --git a/js/Bundle.js b/js/Bundle.js
index f2a47285..f26f098b 100644
--- a/js/Bundle.js
+++ b/js/Bundle.js
@@ -205,6 +205,7 @@ function getChainID(network) {
 	if (network === 'cronos') return 25
 	if (network === 'aurora') return 1313161554
 	if (network === 'rinkeby') return 4
+	if (network === 'mumbai') return 80001
 	if (network === 'optimism') return 10
 	throw new Error(`unsupported network ${network}`)
 }