diff --git a/test/packages/caver.rpc.js b/test/packages/caver.rpc.js
index 007868fa..28e86ee2 100644
--- a/test/packages/caver.rpc.js
+++ b/test/packages/caver.rpc.js
@@ -849,6 +849,10 @@ describe('caver.rpc.governance', () => {
                     expect(payload.params.length).to.equal(caver.rpc.governance.getChainConfig.method.params)
                     const ret = {
                         chainId: 1001,
+                        istanbulCompatibleBlock: 0,
+                        londonCompatibleBlock: 0,
+                        ethTxTypeCompatibleBlock: 0,
+                        kip71CompatibleBlock: 1,
                         deriveShaImpl: 2,
                         governance: {
                             governanceMode: 'ballot',
@@ -862,6 +866,13 @@ describe('caver.rpc.governance', () => {
                                 stakingUpdateInterval: 20,
                                 useGiniCoeff: false,
                             },
+                            kip71: {
+                                lowerboundbasefee: 25000000000,
+                                upperboundbasefee: 750000000000,
+                                gastarget: 30000000,
+                                maxblockgasusedforbasefee: 60000000,
+                                basefeedenominator: 20,
+                            },
                         },
                         istanbul: { epoch: 20, policy: 2, sub: 1 },
                         unitPrice: 25000000000,
diff --git a/types/packages/caver-rpc/src/governance.d.ts b/types/packages/caver-rpc/src/governance.d.ts
index be82c9f8..70de1111 100644
--- a/types/packages/caver-rpc/src/governance.d.ts
+++ b/types/packages/caver-rpc/src/governance.d.ts
@@ -41,6 +41,10 @@ export interface Vote {
 
 export interface ChainConfig {
     chainId: number
+    istanbulCompatibleBlock?: number
+    londonCompatibleBlock?: number
+    ethTxTypeCompatibleBlock?: number
+    kip71CompatibleBlock?: number
     deriveShaImpl: number
     governance: {
         governanceMode: string
@@ -54,6 +58,13 @@ export interface ChainConfig {
             stakingUpdateInterval: number
             useGiniCoeff: boolean
         }
+        kip71?: {
+            lowerboundbasefee: number
+            upperboundbasefee: number
+            gastarget: number
+            maxblockgasusedforbasefee: number
+            basefeedenominator: number
+        }
     }
     istanbul: {
         epoch: number
@@ -77,6 +88,11 @@ export interface GovernanceItems {
     'reward.ratio': string
     'reward.stakingupdateinterval': number
     'reward.useginicoeff': boolean
+    'kip71.lowerboundbasefee'?: number
+    'kip71.upperboundbasefee'?: number
+    'kip71.gastarget'?: number
+    'kip71.maxblockgasusedforbasefee'?: number
+    'kip71.basefeedenominator'?: number
 }
 
 export interface VoteItems {
@@ -95,6 +111,11 @@ export interface VoteItems {
     'reward.minimumstake'?: string
     'reward.proposerupdateinterval'?: number
     'reward.stakingupdateinterval'?: number
+    'kip71.lowerboundbasefee'?: number
+    'kip71.upperboundbasefee'?: number
+    'kip71.gastarget'?: number
+    'kip71.maxblockgasusedforbasefee'?: number
+    'kip71.basefeedenominator'?: number
 }
 
 export interface StakingInformation {
@@ -105,7 +126,7 @@ export interface StakingInformation {
     CouncilStakingAmounts: number[]
     Gini: number
     KIRAddr: string
-    PoCAddr: string
+    PoCAddr: string // PoC is the previous name of KGF.
     UseGini: boolean
 }