diff --git a/CHANGELOG.md b/CHANGELOG.md
index daf16278dd..dadb99b601 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,12 +10,14 @@
 
 
 ### Improvements
+
 * [#1841](https://github.com/crypto-org-chain/cronos/pull/1841) Ci: use `golangci-lint run --fix`.
 * [#1779](https://github.com/crypto-org-chain/cronos/pull/1779) Upgrade rocksdb to `v9.11.2`.
 * [#1824](https://github.com/crypto-org-chain/cronos/pull/1824) Rework on github actions.
 * [#1826](https://github.com/crypto-org-chain/cronos/pull/1826) Update linter and tidy up code.
 * [#1807](https://github.com/crypto-org-chain/cronos/pull/1807) Update go-ethereum version to [v1.15.11](https://github.com/ethereum/go-ethereum/releases/tag/v1.15.11).
 * [#1840](https://github.com/crypto-org-chain/cronos/pull/1840) Tx replacement support.
+* [#1851](https://github.com/crypto-org-chain/cronos/pull/1850) Add default value of CancunTime and PragueTime in chain config.
 
 *Jun 20, 2025*
 
diff --git a/go.mod b/go.mod
index bcd869c6b3..277e340770 100644
--- a/go.mod
+++ b/go.mod
@@ -305,7 +305,7 @@ replace (
 	// release/v1.15
 	github.com/ethereum/go-ethereum => github.com/crypto-org-chain/go-ethereum v1.10.20-0.20250815065500-a4fbafcae0dd
 	// develop
-	github.com/evmos/ethermint => github.com/crypto-org-chain/ethermint v0.6.1-0.20250819081101-9a03795ec96b
+	github.com/evmos/ethermint => github.com/crypto-org-chain/ethermint v0.6.1-0.20250820110050-d940a537fb81
 	// Fix upstream GHSA-h395-qcrw-5vmq and GHSA-3vp4-m3rf-835h vulnerabilities.
 	// TODO Remove it: https://github.com/cosmos/cosmos-sdk/issues/10409
 	github.com/gin-gonic/gin => github.com/gin-gonic/gin v1.9.0
diff --git a/go.sum b/go.sum
index d4252b59a6..2f75a6169b 100644
--- a/go.sum
+++ b/go.sum
@@ -910,8 +910,8 @@ github.com/crypto-org-chain/cosmos-sdk/store v0.0.0-20241217090828-cfbca9fe8254
 github.com/crypto-org-chain/cosmos-sdk/store v0.0.0-20241217090828-cfbca9fe8254/go.mod h1:8DwVTz83/2PSI366FERGbWSH7hL6sB7HbYp8bqksNwM=
 github.com/crypto-org-chain/cosmos-sdk/x/tx v0.0.0-20241217090828-cfbca9fe8254 h1:JzLOFRiKsDtLJt5h0M0jkEIPDKvFFyja7VEp7gG6O9U=
 github.com/crypto-org-chain/cosmos-sdk/x/tx v0.0.0-20241217090828-cfbca9fe8254/go.mod h1:V6DImnwJMTq5qFjeGWpXNiT/fjgE4HtmclRmTqRVM3w=
-github.com/crypto-org-chain/ethermint v0.6.1-0.20250819081101-9a03795ec96b h1:Tm6Hm2id0PRMc8LNQduNY3bA6nvEz/qXoAyTpnEHCHA=
-github.com/crypto-org-chain/ethermint v0.6.1-0.20250819081101-9a03795ec96b/go.mod h1:pilxRzYqGqlhVBDXcBYfDbFy6vkiqxwc8zHDPYXLnOQ=
+github.com/crypto-org-chain/ethermint v0.6.1-0.20250820110050-d940a537fb81 h1:WCfAxy31LBHVwcAlJfU4XEGlUppoeJSn+fRcdIQfiuA=
+github.com/crypto-org-chain/ethermint v0.6.1-0.20250820110050-d940a537fb81/go.mod h1:pilxRzYqGqlhVBDXcBYfDbFy6vkiqxwc8zHDPYXLnOQ=
 github.com/crypto-org-chain/go-block-stm v0.0.0-20241213061541-7afe924fb4a6 h1:6KPEi8dWkDSBddQb4NAvEXmNnTXymF3yVeTaT4Hz1iU=
 github.com/crypto-org-chain/go-block-stm v0.0.0-20241213061541-7afe924fb4a6/go.mod h1:iwQTX9xMX8NV9k3o2BiWXA0SswpsZrDk5q3gA7nWYiE=
 github.com/crypto-org-chain/go-ethereum v1.10.20-0.20250815065500-a4fbafcae0dd h1:ebSnzvM9yKVGFjvoGly7LFQQCS2HuOWMCvQyByJ52Gs=
diff --git a/gomod2nix.toml b/gomod2nix.toml
index f1c3d0637f..5c80725eec 100644
--- a/gomod2nix.toml
+++ b/gomod2nix.toml
@@ -314,8 +314,8 @@ schema = 3
     version = "v0.2.2"
     hash = "sha256-0MLfSJKdeK3Z7tWAXTdzwB4091dmyxIX38S5SKH5QAw="
   [mod."github.com/evmos/ethermint"]
-    version = "v0.6.1-0.20250819081101-9a03795ec96b"
-    hash = "sha256-AbomdzYu7acbuQooMZwqe8vh08Q2jBYtRAMaZF3Yg+4="
+    version = "v0.6.1-0.20250820110050-d940a537fb81"
+    hash = "sha256-IiOutLdexw9kqigNKbQYqRvIuMj9V7HD2LLDubJ7XJQ="
     replaced = "github.com/crypto-org-chain/ethermint"
   [mod."github.com/fatih/color"]
     version = "v1.17.0"
diff --git a/integration_tests/contracts/contracts/TestSuicide.sol b/integration_tests/contracts/contracts/TestSuicide.sol
index e35b07fedb..f1dfb6bc10 100644
--- a/integration_tests/contracts/contracts/TestSuicide.sol
+++ b/integration_tests/contracts/contracts/TestSuicide.sol
@@ -5,6 +5,8 @@ contract Destroyee {
     function destroy() public {
         selfdestruct(payable(msg.sender));
     }
+
+    receive() external payable {}
 }
 
 contract Destroyer {
@@ -17,4 +19,6 @@ contract Destroyer {
         }
         require(_size > 0);
     }
+
+    receive() external payable {}
 }
diff --git a/integration_tests/test_basic.py b/integration_tests/test_basic.py
index 1d1e3c8828..bf8ff20274 100644
--- a/integration_tests/test_basic.py
+++ b/integration_tests/test_basic.py
@@ -25,11 +25,13 @@
     contract_path,
     deploy_contract,
     derive_new_account,
+    fund_acc,
     get_account_nonce,
     get_expedited_params,
     get_receipts_by_block,
     get_sync_info,
     modify_command_in_supervisor_config,
+    remove_cancun_prague_params,
     replace_transaction,
     send_transaction,
     send_txs,
@@ -669,13 +671,14 @@ def test_message_call(cronos):
     assert len(receipt.logs) == iterations
 
 
-def test_suicide(cluster):
+def test_suicide_pre_cancun(cronos):
     """
     test compliance of contract suicide
     - within the tx, after contract suicide, the code is still available.
     - after the tx, the code is not available.
     """
-    w3 = cluster.w3
+    remove_cancun_prague_params(cronos)
+    w3 = cronos.w3
     destroyee = deploy_contract(
         w3,
         contract_path("Destroyee", "TestSuicide.sol"),
@@ -696,6 +699,42 @@ def test_suicide(cluster):
     assert len(w3.eth.get_code(destroyee.address)) == 0
 
 
+def test_suicide_post_cancun(cluster):
+    """
+    after EIP-6780, SELFDESTRUCT will recover all funds to the target
+    but not delete the account, except when called in the same transaction as creation
+    """
+    w3 = cluster.w3
+    destroyee = deploy_contract(
+        w3,
+        contract_path("Destroyee", "TestSuicide.sol"),
+    )
+    destroyer = deploy_contract(
+        w3,
+        contract_path("Destroyer", "TestSuicide.sol"),
+    )
+
+    balance_wanted = 1000000000000000000
+    fund_acc(w3, destroyee, balance_wanted)
+    assert w3.eth.get_balance(destroyee.address) == balance_wanted
+    assert w3.eth.get_balance(destroyer.address) == 0
+
+    old_code_destroyee = w3.eth.get_code(destroyee.address)
+    old_code_destroyer = w3.eth.get_code(destroyer.address)
+    assert len(old_code_destroyee) > 0
+    assert len(old_code_destroyer) > 0
+
+    tx = destroyer.functions.check_codesize_after_suicide(
+        destroyee.address
+    ).build_transaction()
+    receipt = send_transaction(w3, tx)
+    assert receipt.status == 1
+
+    assert w3.eth.get_code(destroyee.address) == old_code_destroyee
+    assert w3.eth.get_balance(destroyee.address) == 0
+    assert w3.eth.get_balance(destroyer.address) == balance_wanted
+
+
 def test_batch_tx(cronos):
     "send multiple eth txs in single cosmos tx"
     w3 = cronos.w3
diff --git a/integration_tests/test_gov_update_params.py b/integration_tests/test_gov_update_params.py
index 1ea7360239..d91fad5066 100644
--- a/integration_tests/test_gov_update_params.py
+++ b/integration_tests/test_gov_update_params.py
@@ -17,6 +17,8 @@ def test_evm_update_param(cronos, tmp_path):
     p = cli.query_params("evm")
     del p["chain_config"]["merge_netsplit_block"]
     del p["chain_config"]["shanghai_time"]
+    del p["chain_config"]["cancun_time"]
+    del p["chain_config"]["prague_time"]
     authority = module_address("gov")
     msg = "/ethermint.evm.v1.MsgUpdateParams"
     submit_gov_proposal(
@@ -33,6 +35,8 @@ def test_evm_update_param(cronos, tmp_path):
     p = cli.query_params("evm")
     assert not p["chain_config"]["merge_netsplit_block"]
     assert not p["chain_config"]["shanghai_time"]
+    assert not p["chain_config"]["cancun_time"]
+    assert not p["chain_config"]["prague_time"]
     invalid_msg = "invalid opcode: PUSH0"
     with pytest.raises(ValueError) as e_info:
         contract.caller.randomTokenId()
diff --git a/integration_tests/utils.py b/integration_tests/utils.py
index 0acf7d5681..09498c306b 100644
--- a/integration_tests/utils.py
+++ b/integration_tests/utils.py
@@ -846,3 +846,36 @@ def assert_gov_params(cli, old_param):
     expedited_param = get_expedited_params(old_param)
     for key, value in expedited_param.items():
         assert param[key] == value, param
+
+
+def fund_acc(w3, acc, fund=3000000000000000000):
+    addr = acc.address
+    if w3.eth.get_balance(addr, "latest") == 0:
+        tx = {"to": addr, "value": fund, "gasPrice": w3.eth.gas_price}
+        send_transaction(w3, tx)
+        assert w3.eth.get_balance(addr, "latest") == fund
+
+
+def remove_cancun_prague_params(cronos):
+    from .cosmoscli import module_address as cosmos_module_address
+
+    cli = cronos.cosmos_cli()
+    p = cli.query_params("evm")
+    del p["chain_config"]["cancun_time"]
+    del p["chain_config"]["prague_time"]
+    authority = cosmos_module_address("gov")
+    msg = "/ethermint.evm.v1.MsgUpdateParams"
+    submit_gov_proposal(
+        cronos,
+        msg,
+        messages=[
+            {
+                "@type": msg,
+                "authority": authority,
+                "params": p,
+            }
+        ],
+    )
+    p = cli.query_params("evm")
+    assert not p["chain_config"]["cancun_time"]
+    assert not p["chain_config"]["prague_time"]
diff --git a/scripts/geth-genesis.json b/scripts/geth-genesis.json
index 925c314d74..debda857f6 100644
--- a/scripts/geth-genesis.json
+++ b/scripts/geth-genesis.json
@@ -15,8 +15,20 @@
     "yoloV3Block": 0,
     "londonBlock": 0,
     "shanghaiTime": 0,
-    "cancunTime": null,
-    "pragueTime": null,
+    "cancunTime": 0,
+    "pragueTime": 0,
+    "blobSchedule": {
+      "cancun": {
+        "target": 3,
+        "max": 6,
+        "baseFeeUpdateFraction": 3338477
+      },
+      "prague": {
+        "target": 3,
+        "max": 6,
+        "baseFeeUpdateFraction": 3338477
+      }
+    },
     "terminalTotalDifficulty": 0,
     "clique": {
       "period": 2,