diff --git a/src/core/wasm/msgs/MsgClearContractAdmin.ts b/src/core/wasm/msgs/MsgClearContractAdmin.ts
index 6d5cda03..769ea79a 100644
--- a/src/core/wasm/msgs/MsgClearContractAdmin.ts
+++ b/src/core/wasm/msgs/MsgClearContractAdmin.ts
@@ -19,7 +19,7 @@ export class MsgClearContractAdmin extends JSONSerializable<
 
   public static fromAmino(
     data: MsgClearContractAdmin.Amino,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgClearContractAdmin {
     const {
       value: { sender, contract },
@@ -28,7 +28,7 @@ export class MsgClearContractAdmin extends JSONSerializable<
   }
 
   // eslint-disable-next-line @typescript-eslint/no-unused-vars
-  public toAmino(_isClassic?: boolean): MsgClearContractAdmin.Amino {
+  public toAmino(_?: boolean): MsgClearContractAdmin.Amino {
     const { admin, contract } = this;
     return {
       type: 'wasm/MsgClearAdmin',
@@ -41,13 +41,13 @@ export class MsgClearContractAdmin extends JSONSerializable<
 
   public static fromProto(
     data: MsgClearContractAdmin.Proto,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgClearContractAdmin {
     const { sender, contract } = data as MsgClearContractAdmin.DataV2;
     return new MsgClearContractAdmin(sender, contract);
   }
 
-  public toProto(_isClassic?: boolean): MsgClearContractAdmin.Proto {
+  public toProto(_?: boolean): MsgClearContractAdmin.Proto {
     return MsgClearAdmin_pb.fromPartial({
       sender: this.admin,
       contract: this.contract,
@@ -75,13 +75,13 @@ export class MsgClearContractAdmin extends JSONSerializable<
 
   public static fromData(
     data: MsgClearContractAdmin.Data,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgClearContractAdmin {
     const { sender, contract } = data as MsgClearContractAdmin.DataV2;
     return new MsgClearContractAdmin(sender, contract);
   }
 
-  public toData(_isClassic?: boolean): MsgClearContractAdmin.Data {
+  public toData(_?: boolean): MsgClearContractAdmin.Data {
     return {
       '@type': '/cosmwasm.wasm.v1.MsgClearAdmin',
       sender: this.admin,
diff --git a/src/core/wasm/msgs/MsgExecuteContract.ts b/src/core/wasm/msgs/MsgExecuteContract.ts
index e7489a18..06347f18 100644
--- a/src/core/wasm/msgs/MsgExecuteContract.ts
+++ b/src/core/wasm/msgs/MsgExecuteContract.ts
@@ -30,7 +30,7 @@ export class MsgExecuteContract extends JSONSerializable<
 
   public static fromAmino(
     data: MsgExecuteContract.Amino,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgExecuteContract {
     const {
       value: { sender, contract, msg, funds },
@@ -43,7 +43,7 @@ export class MsgExecuteContract extends JSONSerializable<
     );
   }
 
-  public toAmino(_isClassic?: boolean): MsgExecuteContract.Amino {
+  public toAmino(_?: boolean): MsgExecuteContract.Amino {
     const { sender, contract, execute_msg, coins } = this;
     return {
       type: 'wasm/MsgExecuteContract',
@@ -58,7 +58,7 @@ export class MsgExecuteContract extends JSONSerializable<
 
   public static fromProto(
     proto: MsgExecuteContract.Proto,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgExecuteContract {
     const p = proto as MsgExecuteContract_pb;
     return new MsgExecuteContract(
@@ -69,7 +69,7 @@ export class MsgExecuteContract extends JSONSerializable<
     );
   }
 
-  public toProto(_isClassic?: boolean): MsgExecuteContract.Proto {
+  public toProto(_?: boolean): MsgExecuteContract.Proto {
     const { sender, contract, execute_msg, coins } = this;
     return MsgExecuteContract_pb.fromPartial({
       funds: coins.toProto(),
@@ -100,13 +100,13 @@ export class MsgExecuteContract extends JSONSerializable<
 
   public static fromData(
     data: MsgExecuteContract.Data,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgExecuteContract {
     const { sender, contract, msg, funds } = data as MsgExecuteContract.DataV2;
     return new MsgExecuteContract(sender, contract, msg, Coins.fromData(funds));
   }
 
-  public toData(_isClassic?: boolean): MsgExecuteContract.Data {
+  public toData(_?: boolean): MsgExecuteContract.Data {
     const { sender, contract, execute_msg, coins } = this;
     return {
       '@type': '/cosmwasm.wasm.v1.MsgExecuteContract',
diff --git a/src/core/wasm/msgs/MsgInstantiateContract.ts b/src/core/wasm/msgs/MsgInstantiateContract.ts
index 06b564c9..2614042a 100644
--- a/src/core/wasm/msgs/MsgInstantiateContract.ts
+++ b/src/core/wasm/msgs/MsgInstantiateContract.ts
@@ -35,7 +35,7 @@ export class MsgInstantiateContract extends JSONSerializable<
 
   public static fromAmino(
     data: MsgInstantiateContract.Amino,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgInstantiateContract {
     const {
       value: { sender, admin, code_id, msg, funds, label },
@@ -50,7 +50,7 @@ export class MsgInstantiateContract extends JSONSerializable<
     );
   }
 
-  public toAmino(_isClassic?: boolean): MsgInstantiateContract.Amino {
+  public toAmino(_?: boolean): MsgInstantiateContract.Amino {
     const { sender, admin, code_id, init_msg, init_coins, label } = this;
     return {
       type: 'wasm/MsgInstantiateContract',
@@ -67,7 +67,7 @@ export class MsgInstantiateContract extends JSONSerializable<
 
   public static fromProto(
     proto: MsgInstantiateContract.Proto,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgInstantiateContract {
     const p = proto as MsgInstantiateContract_pb;
     return new MsgInstantiateContract(
@@ -80,7 +80,7 @@ export class MsgInstantiateContract extends JSONSerializable<
     );
   }
 
-  public toProto(_isClassic?: boolean): MsgInstantiateContract.Proto {
+  public toProto(_?: boolean): MsgInstantiateContract.Proto {
     const { sender, admin, code_id, init_msg, init_coins, label } = this;
     return MsgInstantiateContract_pb.fromPartial({
       admin,
@@ -113,7 +113,7 @@ export class MsgInstantiateContract extends JSONSerializable<
 
   public static fromData(
     data: MsgInstantiateContract.Data,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgInstantiateContract {
     const { sender, admin, code_id, label, msg, funds } =
       data as MsgInstantiateContract.DataV2;
@@ -127,7 +127,7 @@ export class MsgInstantiateContract extends JSONSerializable<
     );
   }
 
-  public toData(_isClassic?: boolean): MsgInstantiateContract.Data {
+  public toData(_?: boolean): MsgInstantiateContract.Data {
     const { sender, admin, code_id, label, init_msg, init_coins } = this;
     return {
       '@type': '/cosmwasm.wasm.v1.MsgInstantiateContract',
diff --git a/src/core/wasm/msgs/MsgMigrateCode.ts b/src/core/wasm/msgs/MsgMigrateCode.ts
index c456fb0d..cac03c2d 100644
--- a/src/core/wasm/msgs/MsgMigrateCode.ts
+++ b/src/core/wasm/msgs/MsgMigrateCode.ts
@@ -24,7 +24,7 @@ export class MsgMigrateCode extends JSONSerializable<
 
   public static fromAmino(
     _data: MsgMigrateCode.Amino,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgMigrateCode {
     throw new Error('Not supported for the network');
   }
@@ -35,7 +35,7 @@ export class MsgMigrateCode extends JSONSerializable<
 
   public static fromProto(
     _proto: MsgMigrateCode.Proto,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgMigrateCode {
     throw new Error('Not supported for the network');
   }
@@ -54,12 +54,12 @@ export class MsgMigrateCode extends JSONSerializable<
 
   public static fromData(
     _data: MsgMigrateCode.Data,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgMigrateCode {
     throw new Error('Not supported for the network');
   }
 
-  public toData(_isClassic?: boolean): MsgMigrateCode.Data {
+  public toData(_?: boolean): MsgMigrateCode.Data {
     throw new Error('Not supported for the network');
   }
 }
diff --git a/src/core/wasm/msgs/MsgMigrateContract.ts b/src/core/wasm/msgs/MsgMigrateContract.ts
index 0a6a5e5d..d0cccb2a 100644
--- a/src/core/wasm/msgs/MsgMigrateContract.ts
+++ b/src/core/wasm/msgs/MsgMigrateContract.ts
@@ -27,7 +27,7 @@ export class MsgMigrateContract extends JSONSerializable<
 
   public static fromAmino(
     data: MsgMigrateContract.Amino,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgMigrateContract {
     const {
       value: { sender, contract, code_id, msg },
@@ -40,7 +40,7 @@ export class MsgMigrateContract extends JSONSerializable<
     );
   }
 
-  public toAmino(_isClassic?: boolean): MsgMigrateContract.Amino {
+  public toAmino(_?: boolean): MsgMigrateContract.Amino {
     const { admin, contract, new_code_id, migrate_msg } = this;
     return {
       type: 'wasm/MsgMigrateContract',
@@ -55,7 +55,7 @@ export class MsgMigrateContract extends JSONSerializable<
 
   public static fromProto(
     proto: MsgMigrateContract.Proto,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgMigrateContract {
     const p = proto as MsgMigrateContract_pb;
     return new MsgMigrateContract(
@@ -66,7 +66,7 @@ export class MsgMigrateContract extends JSONSerializable<
     );
   }
 
-  public toProto(_isClassic?: boolean): MsgMigrateContract.Proto {
+  public toProto(_?: boolean): MsgMigrateContract.Proto {
     const { admin, contract, new_code_id, migrate_msg } = this;
     return MsgMigrateContract_pb.fromPartial({
       sender: admin,
@@ -96,7 +96,7 @@ export class MsgMigrateContract extends JSONSerializable<
 
   public static fromData(
     data: MsgMigrateContract.Data,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgMigrateContract {
     const { sender, contract, code_id, msg } =
       data as MsgMigrateContract.DataV2;
@@ -108,7 +108,7 @@ export class MsgMigrateContract extends JSONSerializable<
     );
   }
 
-  public toData(_isClassic?: boolean): MsgMigrateContract.Data {
+  public toData(_?: boolean): MsgMigrateContract.Data {
     const { admin, contract, new_code_id, migrate_msg } = this;
     return {
       '@type': '/cosmwasm.wasm.v1.MsgMigrateContract',
diff --git a/src/core/wasm/msgs/MsgStoreCode.ts b/src/core/wasm/msgs/MsgStoreCode.ts
index fd68d289..8418dd7f 100644
--- a/src/core/wasm/msgs/MsgStoreCode.ts
+++ b/src/core/wasm/msgs/MsgStoreCode.ts
@@ -25,7 +25,7 @@ export class MsgStoreCode extends JSONSerializable<
 
   public static fromAmino(
     data: MsgStoreCode.AminoV2 | MsgStoreCode.AminoV1,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgStoreCode {
     const {
       value: { sender, wasm_byte_code, instantiate_permission },
@@ -39,7 +39,7 @@ export class MsgStoreCode extends JSONSerializable<
     );
   }
 
-  public toAmino(_isClassic?: boolean): MsgStoreCode.AminoV2 {
+  public toAmino(_?: boolean): MsgStoreCode.AminoV2 {
     const { sender, wasm_byte_code, instantiate_permission } = this;
     return {
       type: 'wasm/MsgStoreCode',
@@ -53,7 +53,7 @@ export class MsgStoreCode extends JSONSerializable<
 
   public static fromProto(
     proto: MsgStoreCode.Proto,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgStoreCode {
     const p = proto as MsgStoreCode_pb;
     return new MsgStoreCode(
@@ -65,7 +65,7 @@ export class MsgStoreCode extends JSONSerializable<
     );
   }
 
-  public toProto(_isClassic?: boolean): MsgStoreCode.Proto {
+  public toProto(_?: boolean): MsgStoreCode.Proto {
     const { sender, wasm_byte_code, instantiate_permission } = this;
     return MsgStoreCode_pb.fromPartial({
       sender,
@@ -91,7 +91,7 @@ export class MsgStoreCode extends JSONSerializable<
 
   public static fromData(
     data: MsgStoreCode.DataV2 | MsgStoreCode.DataV1,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgStoreCode {
     const { sender, wasm_byte_code, instantiate_permission } =
       data as MsgStoreCode.DataV2;
@@ -104,7 +104,7 @@ export class MsgStoreCode extends JSONSerializable<
     );
   }
 
-  public toData(_isClassic?: boolean): MsgStoreCode.Data {
+  public toData(_?: boolean): MsgStoreCode.Data {
     const { sender, wasm_byte_code, instantiate_permission } = this;
     return {
       '@type': '/cosmwasm.wasm.v1.MsgStoreCode',
diff --git a/src/core/wasm/msgs/MsgUpdateContractAdmin.ts b/src/core/wasm/msgs/MsgUpdateContractAdmin.ts
index ac848f85..03a7f7f7 100644
--- a/src/core/wasm/msgs/MsgUpdateContractAdmin.ts
+++ b/src/core/wasm/msgs/MsgUpdateContractAdmin.ts
@@ -24,7 +24,7 @@ export class MsgUpdateContractAdmin extends JSONSerializable<
 
   public static fromAmino(
     data: MsgUpdateContractAdmin.Amino,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgUpdateContractAdmin {
     const {
       value: { sender, new_admin, contract },
@@ -32,7 +32,7 @@ export class MsgUpdateContractAdmin extends JSONSerializable<
     return new MsgUpdateContractAdmin(sender, new_admin, contract);
   }
 
-  public toAmino(_isClassic?: boolean): MsgUpdateContractAdmin.Amino {
+  public toAmino(_?: boolean): MsgUpdateContractAdmin.Amino {
     const { admin, new_admin, contract } = this;
     return {
       type: 'wasm/MsgUpdateAdmin',
@@ -46,13 +46,13 @@ export class MsgUpdateContractAdmin extends JSONSerializable<
 
   public static fromProto(
     proto: MsgUpdateContractAdmin.Proto,
-    _isClassic?: boolean
+    _?: boolean
   ): MsgUpdateContractAdmin {
     const p = proto as MsgUpdateAdmin_pb;
     return new MsgUpdateContractAdmin(p.sender, p.newAdmin, p.contract);
   }
 
-  public toProto(_isClassic?: boolean): MsgUpdateContractAdmin.Proto {
+  public toProto(_?: boolean): MsgUpdateContractAdmin.Proto {
     const { admin, new_admin, contract } = this;
     return MsgUpdateAdmin_pb.fromPartial({
       sender: admin,