diff --git a/tl/generate/scheme/lite_api.tl b/tl/generate/scheme/lite_api.tl
index ce4d27316..2a46d77a8 100644
--- a/tl/generate/scheme/lite_api.tl
+++ b/tl/generate/scheme/lite_api.tl
@@ -33,7 +33,7 @@ liteServer.currentTime now:int = liteServer.CurrentTime;
 liteServer.version mode:# version:int capabilities:long now:int = liteServer.Version;
 liteServer.blockData id:tonNode.blockIdExt data:bytes = liteServer.BlockData;
 liteServer.blockState id:tonNode.blockIdExt root_hash:int256 file_hash:int256 data:bytes = liteServer.BlockState;
-liteServer.blockHeader id:tonNode.blockIdExt mode:# header_proof:bytes = liteServer.BlockHeader;
+liteServer.blockHeader id:tonNode.blockIdExt mode:# header_proof:bytes tx_cnt:mode.30?int = liteServer.BlockHeader;
 liteServer.sendMsgStatus status:int = liteServer.SendMsgStatus;
 liteServer.accountState id:tonNode.blockIdExt shardblk:tonNode.blockIdExt shard_proof:bytes proof:bytes state:bytes = liteServer.AccountState;
 liteServer.runMethodResult mode:# id:tonNode.blockIdExt shardblk:tonNode.blockIdExt shard_proof:mode.0?bytes proof:mode.0?bytes state_proof:mode.1?bytes init_c7:mode.3?bytes lib_extras:mode.4?bytes exit_code:int result:mode.2?bytes = liteServer.RunMethodResult;
diff --git a/tl/generate/scheme/lite_api.tlo b/tl/generate/scheme/lite_api.tlo
index da64ac53b..d50a62b87 100644
Binary files a/tl/generate/scheme/lite_api.tlo and b/tl/generate/scheme/lite_api.tlo differ
diff --git a/validator/impl/liteserver.cpp b/validator/impl/liteserver.cpp
index 9c7a04561..45ddc05fd 100644
--- a/validator/impl/liteserver.cpp
+++ b/validator/impl/liteserver.cpp
@@ -417,9 +417,32 @@ void LiteQuery::continue_getBlockHeader(BlockIdExt blkid, int mode, Ref<ton::val
     fatal_error(proof_data.move_as_error());
     return;
   }
+  int tx_cnt = 0;
+  if (mode & (1 << 30)) {
+    block::gen::Block::Record blk;
+    block::gen::BlockInfo::Record info;
+    CHECK(tlb::unpack_cell(block_root, blk) && tlb::unpack_cell(blk.info, info));
+    block::gen::BlockExtra::Record extra;
+    CHECK(tlb::unpack_cell(std::move(blk.extra), extra));
+    vm::AugmentedDictionary acc_dict{vm::load_cell_slice_ref(extra.account_blocks), 256,
+                                     block::tlb::aug_ShardAccountBlocks};
+    acc_dict.check_for_each([&](td::Ref<vm::CellSlice> value, td::ConstBitPtr key, int n) -> bool {
+      block::gen::CurrencyCollection::Record skip;
+      block::gen::csr_unpack_skip(value, skip);
+      block::gen::AccountBlock::Record acc_blk;
+      CHECK(tlb::csr_unpack(std::move(value), acc_blk));
+      vm::AugmentedDictionary trans_dict{vm::DictNonEmpty(), std::move(acc_blk.transactions), 64,
+                                         block::tlb::aug_AccountTransactions};
+      trans_dict.check_for_each([&](td::Ref<vm::CellSlice> value, td::ConstBitPtr key, int n) -> bool {
+        ++tx_cnt;
+        return true;
+      });
+      return true;
+    });
+  }
   // send answer
-  auto b = ton::create_serialize_tl_object<ton::lite_api::liteServer_blockHeader>(ton::create_tl_lite_block_id(blkid),
-                                                                                  mode, proof_data.move_as_ok());
+  auto b = ton::create_serialize_tl_object<ton::lite_api::liteServer_blockHeader>(
+      ton::create_tl_lite_block_id(blkid), mode, proof_data.move_as_ok(), tx_cnt);
   finish_query(std::move(b));
 }