diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2529cb9e3c3..ef335ee45bf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -41,6 +41,8 @@
 
 ### Fixed
 
+- [#7194](https://github.com/ChainSafe/forest/pull/7194): Added `UpgradeXxHeight` placeholder for the NV29 network upgrade.
+
 - [#7211](https://github.com/ChainSafe/forest/pull/7211): Fixed `forest-wallet` to allow using the unencrypted keystore with `--encrypt false` when an encrypted keystore also exists.
 
 - [#7129](https://github.com/ChainSafe/forest/pull/7129): Fixed a few inaccurate cache size metrics.
diff --git a/docs/openrpc-specs/v0.json b/docs/openrpc-specs/v0.json
index 8e0d2461325..f01b7e7ee4a 100644
--- a/docs/openrpc-specs/v0.json
+++ b/docs/openrpc-specs/v0.json
@@ -10338,6 +10338,10 @@
           "UpgradeWatermelonHeight": {
             "type": "integer",
             "format": "int64"
+          },
+          "UpgradeXxHeight": {
+            "type": "integer",
+            "format": "int64"
           }
         },
         "required": [
@@ -10373,7 +10377,8 @@
           "UpgradeTeepHeight",
           "UpgradeTockHeight",
           "UpgradeGoldenWeekHeight",
-          "UpgradeFireHorseHeight"
+          "UpgradeFireHorseHeight",
+          "UpgradeXxHeight"
         ]
       },
       "GasTrace": {
diff --git a/docs/openrpc-specs/v1.json b/docs/openrpc-specs/v1.json
index ff91b9b37b2..6f3e534f81b 100644
--- a/docs/openrpc-specs/v1.json
+++ b/docs/openrpc-specs/v1.json
@@ -10549,6 +10549,10 @@
           "UpgradeWatermelonHeight": {
             "type": "integer",
             "format": "int64"
+          },
+          "UpgradeXxHeight": {
+            "type": "integer",
+            "format": "int64"
           }
         },
         "required": [
@@ -10584,7 +10588,8 @@
           "UpgradeTeepHeight",
           "UpgradeTockHeight",
           "UpgradeGoldenWeekHeight",
-          "UpgradeFireHorseHeight"
+          "UpgradeFireHorseHeight",
+          "UpgradeXxHeight"
         ]
       },
       "GasTrace": {
diff --git a/scripts/tests/api_compare/filter-list b/scripts/tests/api_compare/filter-list
index 02dc8cafde9..f749dc6fadb 100644
--- a/scripts/tests/api_compare/filter-list
+++ b/scripts/tests/api_compare/filter-list
@@ -1,7 +1,6 @@
 # This list contains potentially broken methods (or tests) that are ignored.
 # They should be considered bugged, and not used until the root cause is resolved.
 
-!Filecoin.StateGetNetworkParams
 !Filecoin.EthEstimateGas
 !Filecoin.EthGetBlockByHash
 !Filecoin.EthGetBlockByNumber
diff --git a/scripts/tests/api_compare/filter-list-gateway b/scripts/tests/api_compare/filter-list-gateway
index 24acbdc7b0e..870225d6f8c 100644
--- a/scripts/tests/api_compare/filter-list-gateway
+++ b/scripts/tests/api_compare/filter-list-gateway
@@ -65,8 +65,6 @@
 !Filecoin.StateSearchMsg
 # https://github.com/filecoin-project/lotus/pull/13562
 !Filecoin.EthGetTransactionReceiptLimited
-# https://github.com/filecoin-project/lotus/pull/13640
-!Filecoin.StateGetNetworkParams
 # https://github.com/filecoin-project/lotus/pull/13644
 !Filecoin.EthEstimateGas
 # https://github.com/filecoin-project/lotus/pull/13618
diff --git a/scripts/tests/api_compare/filter-list-offline b/scripts/tests/api_compare/filter-list-offline
index b35a2394123..782ee74579f 100644
--- a/scripts/tests/api_compare/filter-list-offline
+++ b/scripts/tests/api_compare/filter-list-offline
@@ -33,6 +33,5 @@
 !Filecoin.ChainSetHead
 !Filecoin.EthTraceFilter
 !Filecoin.EthTraceReplayBlockTransactions
-!Filecoin.StateGetNetworkParams
 !Filecoin.EthEstimateGas
 !Filecoin.EthGetBlockByHash
diff --git a/src/rpc/methods/state.rs b/src/rpc/methods/state.rs
index 2d517f61b68..b4d7efd8f62 100644
--- a/src/rpc/methods/state.rs
+++ b/src/rpc/methods/state.rs
@@ -14,7 +14,7 @@ use crate::eth::EthChainId;
 use crate::interpreter::{MessageCallbackCtx, VMTrace};
 use crate::libp2p::NetworkMessage;
 use crate::lotus_json::{LotusJson, lotus_json_with_self};
-use crate::networks::ChainConfig;
+use crate::networks::{ChainConfig, NetworkChain};
 use crate::prelude::*;
 use crate::rpc::registry::actors_reg::load_and_serialize_actor_state;
 use crate::shim::actors::market::DealState;
@@ -3265,7 +3265,8 @@ pub struct ForkUpgradeParams {
     upgrade_tock_height: ChainEpoch,
     upgrade_golden_week_height: ChainEpoch,
     upgrade_fire_horse_height: ChainEpoch,
-    //upgrade_xxx_height: ChainEpoch,
+    // placeholder for the next network upgrade
+    upgrade_xx_height: ChainEpoch,
 }
 
 impl TryFrom<&ChainConfig> for ForkUpgradeParams {
@@ -3315,6 +3316,10 @@ impl TryFrom<&ChainConfig> for ForkUpgradeParams {
             upgrade_tock_height: get_height(Tock)?,
             upgrade_golden_week_height: get_height(GoldenWeek)?,
             upgrade_fire_horse_height: get_height(FireHorse)?,
+            upgrade_xx_height: match config.network {
+                NetworkChain::Mainnet => 9_999_999_999,
+                _ => 999_999_999_999_999,
+            },
         })
     }
 }
diff --git a/src/rpc/snapshots/forest__rpc__tests__rpc__v0.snap b/src/rpc/snapshots/forest__rpc__tests__rpc__v0.snap
index 3c699e5a5fb..95f9e3b280e 100644
--- a/src/rpc/snapshots/forest__rpc__tests__rpc__v0.snap
+++ b/src/rpc/snapshots/forest__rpc__tests__rpc__v0.snap
@@ -6572,6 +6572,9 @@ components:
         UpgradeWatermelonHeight:
           type: integer
           format: int64
+        UpgradeXxHeight:
+          type: integer
+          format: int64
       required:
         - UpgradeSmokeHeight
         - UpgradeBreezeHeight
@@ -6606,6 +6609,7 @@ components:
         - UpgradeTockHeight
         - UpgradeGoldenWeekHeight
         - UpgradeFireHorseHeight
+        - UpgradeXxHeight
     GasTrace:
       type: object
       properties:
diff --git a/src/rpc/snapshots/forest__rpc__tests__rpc__v1.snap b/src/rpc/snapshots/forest__rpc__tests__rpc__v1.snap
index ab678528596..01a7abe896f 100644
--- a/src/rpc/snapshots/forest__rpc__tests__rpc__v1.snap
+++ b/src/rpc/snapshots/forest__rpc__tests__rpc__v1.snap
@@ -6688,6 +6688,9 @@ components:
         UpgradeWatermelonHeight:
           type: integer
           format: int64
+        UpgradeXxHeight:
+          type: integer
+          format: int64
       required:
         - UpgradeSmokeHeight
         - UpgradeBreezeHeight
@@ -6722,6 +6725,7 @@ components:
         - UpgradeTockHeight
         - UpgradeGoldenWeekHeight
         - UpgradeFireHorseHeight
+        - UpgradeXxHeight
     GasTrace:
       type: object
       properties:
diff --git a/src/tool/subcommands/api_cmd/test_snapshots.txt b/src/tool/subcommands/api_cmd/test_snapshots.txt
index c7e08f24d96..310ed20b0bc 100644
--- a/src/tool/subcommands/api_cmd/test_snapshots.txt
+++ b/src/tool/subcommands/api_cmd/test_snapshots.txt
@@ -278,7 +278,7 @@ filecoin_stategetbeaconentry_1737546933208724.rpcsnap.json.zst
 filecoin_stategetclaim_1737546933208940.rpcsnap.json.zst
 filecoin_stategetclaims_1737546933208977.rpcsnap.json.zst
 filecoin_stategetid_1764943126105310.rpcsnap.json.zst
-filecoin_stategetnetworkparams_1777517671344321.rpcsnap.json.zst
+filecoin_stategetnetworkparams_1781890385127277.rpcsnap.json.zst
 filecoin_stategetrandomnessdigestfrombeacon_1737546933236534.rpcsnap.json.zst
 filecoin_stategetrandomnessdigestfromtickets_1737546933236558.rpcsnap.json.zst
 filecoin_stategetrandomnessfrombeacon_1737546933236581.rpcsnap.json.zst