diff --git a/src/config/mainnet.ts b/src/config/mainnet.ts
index f13c031..aae1a7d 100644
--- a/src/config/mainnet.ts
+++ b/src/config/mainnet.ts
@@ -11,16 +11,16 @@ const ethgasstation: OffChainOracle = {
   additionalDataProperty: null,
 };
 
-const zoltu: OffChainOracle = {
-  name: 'zoltu',
-  url: 'https://gas-oracle.zoltu.io/',
-  instantPropertyName: 'percentile_99',
-  fastPropertyName: 'percentile_90',
-  standardPropertyName: 'percentile_60',
-  lowPropertyName: 'percentile_30',
-  denominator: 1,
-  additionalDataProperty: null,
-};
+// const zoltu: OffChainOracle = {
+//   name: 'zoltu',
+//   url: 'https://gas-oracle.zoltu.io/',
+//   instantPropertyName: 'percentile_99',
+//   fastPropertyName: 'percentile_90',
+//   standardPropertyName: 'percentile_60',
+//   lowPropertyName: 'percentile_30',
+//   denominator: 1,
+//   additionalDataProperty: null,
+// };
 
 const etherchain: OffChainOracle = {
   name: 'etherchain',
@@ -79,7 +79,7 @@ export const offChainOracles: OffChainOracles = {
   gasNow,
   poa,
   etherchain,
-  zoltu,
+  // zoltu,
 };
 
 export const onChainOracles: OnChainOracles = {