diff --git a/validator/db/archive-manager.cpp b/validator/db/archive-manager.cpp
index d8a079721..14b6515f8 100644
--- a/validator/db/archive-manager.cpp
+++ b/validator/db/archive-manager.cpp
@@ -604,6 +604,7 @@ void ArchiveManager::load_package(PackageId id) {
       td::actor::create_actor<ArchiveSlice>("slice", id.id, id.key, id.temp, false, db_root_, archive_lru_.get());
 
   m.emplace(id, std::move(desc));
+  update_permanent_slices();
 }
 
 const ArchiveManager::FileDescription *ArchiveManager::get_file_desc(ShardIdFull shard, PackageId id, BlockSeqno seqno,
@@ -677,6 +678,7 @@ const ArchiveManager::FileDescription *ArchiveManager::add_file_desc(ShardIdFull
         .ensure();
   }
   index_->commit_transaction().ensure();
+  update_permanent_slices();
   return &desc;
 }
 
@@ -1207,6 +1209,7 @@ void ArchiveManager::truncate(BlockSeqno masterchain_seqno, ConstBlockHandle han
       }
     }
   }
+  update_permanent_slices();
 }
 
 void ArchiveManager::FileMap::shard_index_add(const FileDescription &desc) {
@@ -1305,6 +1308,23 @@ const ArchiveManager::FileDescription *ArchiveManager::FileMap::get_next_file_de
   return it2->second->deleted ? nullptr : it2->second;
 }
 
+void ArchiveManager::update_permanent_slices() {
+  if (archive_lru_.empty()) {
+    return;
+  }
+  std::vector<PackageId> ids;
+  if (!files_.empty()) {
+    ids.push_back(files_.rbegin()->first);
+  }
+  if (!key_files_.empty()) {
+    ids.push_back(key_files_.rbegin()->first);
+  }
+  if (!temp_files_.empty()) {
+    ids.push_back(temp_files_.rbegin()->first);
+  }
+  td::actor::send_closure(archive_lru_, &ArchiveLru::set_permanent_slices, std::move(ids));
+}
+
 }  // namespace validator
 
 }  // namespace ton
diff --git a/validator/db/archive-manager.hpp b/validator/db/archive-manager.hpp
index 138d8b36d..3f17069c0 100644
--- a/validator/db/archive-manager.hpp
+++ b/validator/db/archive-manager.hpp
@@ -123,6 +123,9 @@ class ArchiveManager : public td::actor::Actor {
     size_t size() const {
       return files_.size();
     }
+    bool empty() const {
+      return files_.empty();
+    }
     std::map<PackageId, FileDescription>::const_iterator lower_bound(const PackageId &x) const {
       return files_.lower_bound(x);
     }
@@ -217,6 +220,8 @@ class ArchiveManager : public td::actor::Actor {
   PackageId get_temp_package_id() const;
   PackageId get_key_package_id(BlockSeqno seqno) const;
   PackageId get_temp_package_id_by_unixtime(UnixTime ts) const;
+
+  void update_permanent_slices();
 };
 
 }  // namespace validator
diff --git a/validator/db/archive-slice.cpp b/validator/db/archive-slice.cpp
index 08cd97fc3..4a7c419a9 100644
--- a/validator/db/archive-slice.cpp
+++ b/validator/db/archive-slice.cpp
@@ -900,23 +900,58 @@ void ArchiveSlice::truncate(BlockSeqno masterchain_seqno, ConstBlockHandle handl
   promise.set_value(td::Unit());
 }
 
+static std::tuple<td::uint32, bool, bool> to_tuple(const PackageId &id) {
+  return {id.id, id.temp, id.key};
+}
+
 void ArchiveLru::on_query(td::actor::ActorId<ArchiveSlice> slice, PackageId id, size_t files_count) {
-  SliceInfo &info = open_slices_[id];
-  if (info.lru_idx != 0) {
+  SliceInfo &info = slices_[to_tuple(id)];
+  if (info.opened_idx != 0) {
     total_files_ -= info.files_count;
-    lru_.erase(info.lru_idx);
+    lru_.erase(info.opened_idx);
   }
   info.actor = std::move(slice);
   total_files_ += (info.files_count = files_count);
-  lru_.emplace(info.lru_idx = current_idx_++, id);
+  info.opened_idx = current_idx_++;
+  if (!info.is_permanent) {
+    lru_.emplace(info.opened_idx, id);
+  }
+  enforce_limit();
+}
+
+void ArchiveLru::set_permanent_slices(std::vector<PackageId> ids) {
+  for (auto id : permanent_slices_) {
+    SliceInfo &info = slices_[to_tuple(id)];
+    if (!info.is_permanent) {
+      continue;
+    }
+    info.is_permanent = false;
+    if (info.opened_idx) {
+      lru_.emplace(info.opened_idx, id);
+    }
+  }
+  permanent_slices_ = std::move(ids);
+  for (auto id : permanent_slices_) {
+    SliceInfo &info = slices_[to_tuple(id)];
+    if (info.is_permanent) {
+      continue;
+    }
+    info.is_permanent = true;
+    if (info.opened_idx) {
+      lru_.erase(info.opened_idx);
+    }
+  }
+  enforce_limit();
+}
 
+void ArchiveLru::enforce_limit() {
   while (total_files_ > max_total_files_ && lru_.size() > 1) {
     auto it = lru_.begin();
-    auto it2 = open_slices_.find(it->second);
+    auto it2 = slices_.find(to_tuple(it->second));
     lru_.erase(it);
     total_files_ -= it2->second.files_count;
     td::actor::send_closure(it2->second.actor, &ArchiveSlice::close_files);
-    open_slices_.erase(it2);
+    it2->second.opened_idx = 0;
   }
 }
 
diff --git a/validator/db/archive-slice.hpp b/validator/db/archive-slice.hpp
index a1a9df461..9f775d2ec 100644
--- a/validator/db/archive-slice.hpp
+++ b/validator/db/archive-slice.hpp
@@ -196,17 +196,22 @@ class ArchiveLru : public td::actor::Actor {
     CHECK(max_total_files_ > 0);
   }
   void on_query(td::actor::ActorId<ArchiveSlice> slice, PackageId id, size_t files_count);
+  void set_permanent_slices(std::vector<PackageId> ids);
  private:
   size_t current_idx_ = 1;
   struct SliceInfo {
     td::actor::ActorId<ArchiveSlice> actor;
     size_t files_count = 0;
-    size_t lru_idx = 0;
+    size_t opened_idx = 0;  // 0 - not opened
+    bool is_permanent = false;
   };
-  std::map<PackageId, SliceInfo> open_slices_;
+  std::map<std::tuple<td::uint32, bool, bool>, SliceInfo> slices_;
   std::map<size_t, PackageId> lru_;
   size_t total_files_ = 0;
   size_t max_total_files_ = 0;
+  std::vector<PackageId> permanent_slices_;
+
+  void enforce_limit();
 };
 
 }  // namespace validator