diff --git a/CMakeModules/cppcheck.cmake b/CMakeModules/cppcheck.cmake
index 4f7a0b22bb..2cd752ccc1 100644
--- a/CMakeModules/cppcheck.cmake
+++ b/CMakeModules/cppcheck.cmake
@@ -11,6 +11,7 @@ else ()
             --error-exitcode=1
             --enable=all
             --suppress=missingInclude
+            --suppress=missingIncludeSystem
             # find_if - useless here
             --suppress=useStlAlgorithm:${PROJECT_SOURCE_DIR}/*/pbft_sync_packet_handler.cpp
             --suppress=noExplicitConstructor
@@ -36,8 +37,10 @@ else ()
             --suppress=unmatchedSuppression:${PROJECT_SOURCE_DIR}/*/Common.h
             --suppress=cstyleCast:${PROJECT_SOURCE_DIR}/*/vector_ref.h
             --suppress=cstyleCast:${PROJECT_SOURCE_DIR}/*/Common.h
-            #not an issue here 
+            # not an issue here
             --suppress=virtualCallInConstructor:${PROJECT_SOURCE_DIR}/*/final_chain.cpp
+            # just a warning
+            --suppress=duplInheritedMember:${PROJECT_SOURCE_DIR}/*/FixedHash.h
             # Only show found errors
             "--quiet"
 
diff --git a/conanfile.py b/conanfile.py
index 364e1d5d2a..49e27f5ef8 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -13,11 +13,11 @@ class TaraxaConan(ConanFile):
     generators = "cmake"
 
     def requirements(self):
-        self.requires("boost/1.81.0")
-        self.requires("cppcheck/2.10")
-        self.requires("openssl/1.1.1t")
+        self.requires("boost/1.83.0")
+        self.requires("cppcheck/2.12")
+        self.requires("openssl/3.0.10")
         self.requires("cryptopp/8.7.0")
-        self.requires("gtest/1.13.0")
+        self.requires("gtest/1.14.0")
         self.requires("lz4/1.9.4")
         self.requires("rocksdb/6.29.5")
         self.requires("prometheus-cpp/1.1.0")
diff --git a/libraries/aleth/libdevcore/Address.cpp b/libraries/aleth/libdevcore/Address.cpp
deleted file mode 100644
index 6bb3463e46..0000000000
--- a/libraries/aleth/libdevcore/Address.cpp
+++ /dev/null
@@ -1,10 +0,0 @@
-// Aleth: Ethereum C++ client, tools and libraries.
-// Copyright 2014-2019 Aleth Authors.
-// Licensed under the GNU General Public License, Version 3.
-#include "Address.h"
-
-namespace dev {
-Address const ZeroAddress;
-Address const MaxAddress{"0xffffffffffffffffffffffffffffffffffffffff"};
-Address const SystemAddress{"0xfffffffffffffffffffffffffffffffffffffffe"};
-}  // namespace dev
diff --git a/libraries/aleth/libdevcore/Address.h b/libraries/aleth/libdevcore/Address.h
index b9fdcf8fae..66be630322 100644
--- a/libraries/aleth/libdevcore/Address.h
+++ b/libraries/aleth/libdevcore/Address.h
@@ -23,12 +23,5 @@ using Addresses = h160s;
 using AddressSet = std::unordered_set<h160>;
 
 /// The zero address.
-extern Address const ZeroAddress;
-
-/// The last address.
-extern Address const MaxAddress;
-
-/// The SYSTEM address.
-extern Address const SystemAddress;
-
+Address const ZeroAddress;
 }  // namespace dev
diff --git a/libraries/aleth/libdevcore/Common.h b/libraries/aleth/libdevcore/Common.h
index 10dc3e8403..e7dfe89035 100644
--- a/libraries/aleth/libdevcore/Common.h
+++ b/libraries/aleth/libdevcore/Common.h
@@ -127,7 +127,6 @@ using strings = std::vector<std::string>;
 
 // Null/Invalid values for convenience.
 extern bytes const NullBytes;
-u256 constexpr Invalid256 = 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff_cppui256;
 
 /// Interprets @a _u as a two's complement signed number and returns the
 /// resulting s256.
diff --git a/libraries/cli/include/cli/tools.hpp b/libraries/cli/include/cli/tools.hpp
index d372684ca9..cf33ed2928 100644
--- a/libraries/cli/include/cli/tools.hpp
+++ b/libraries/cli/include/cli/tools.hpp
@@ -35,8 +35,9 @@ Json::Value getGenesis(Config::ChainIdType chain_id);
 void generateWallet(const std::string& wallet);
 
 // Override existing config and wallet files
-Json::Value overrideConfig(Json::Value& config, std::string& data_dir, std::vector<std::string> boot_nodes,
-                           std::vector<std::string> log_channels, std::vector<std::string> log_configurations,
+Json::Value overrideConfig(Json::Value& config, std::string& data_dir, const std::vector<std::string>& boot_nodes,
+                           const std::vector<std::string>& log_channels,
+                           const std::vector<std::string>& log_configurations,
                            const std::vector<std::string>& boot_nodes_append,
                            const std::vector<std::string>& log_channels_append);
 Json::Value overrideWallet(Json::Value& wallet, const std::string& node_key, const std::string& vrf_key);
diff --git a/libraries/cli/src/tools.cpp b/libraries/cli/src/tools.cpp
index 92b2720760..cdfea7be4f 100644
--- a/libraries/cli/src/tools.cpp
+++ b/libraries/cli/src/tools.cpp
@@ -64,8 +64,8 @@ Json::Value getGenesis(Config::ChainIdType chain_id) {
   return genesis;
 }
 
-Json::Value overrideConfig(Json::Value& conf, std::string& data_dir, vector<string> boot_nodes,
-                           vector<string> log_channels, vector<string> log_configurations,
+Json::Value overrideConfig(Json::Value& conf, std::string& data_dir, const vector<string>& boot_nodes,
+                           const vector<string>& log_channels, const vector<string>& log_configurations,
                            const vector<string>& boot_nodes_append, const vector<string>& log_channels_append) {
   if (data_dir.empty()) {
     if (conf["data_path"].asString().empty()) {
@@ -88,10 +88,7 @@ Json::Value overrideConfig(Json::Value& conf, std::string& data_dir, vector<stri
     conf["network"]["boot_nodes"] = Json::Value(Json::arrayValue);
   }
   if (boot_nodes_append.size() > 0) {
-    boot_nodes = boot_nodes_append;
-  }
-  if (boot_nodes.size() > 0) {
-    for (auto const& b : boot_nodes) {
+    for (auto const& b : boot_nodes_append) {
       vector<string> result;
       boost::split(result, b, boost::is_any_of(":/"));
       if (result.size() != 3) throw invalid_argument("Boot node in boot_nodes not specified correctly");
@@ -130,10 +127,7 @@ Json::Value overrideConfig(Json::Value& conf, std::string& data_dir, vector<stri
     }
   }
   if (log_channels_append.size() > 0) {
-    log_channels = log_channels_append;
-  }
-  if (log_channels.size() > 0) {
-    for (auto const& l : log_channels) {
+    for (auto const& l : log_channels_append) {
       vector<string> result;
       boost::split(result, l, boost::is_any_of(":"));
       if (result.size() != 2) throw invalid_argument("Log channel in log_channels not specified correctly");
diff --git a/libraries/config/include/config/config_utils.hpp b/libraries/config/include/config/config_utils.hpp
index 36d7f5367f..e5b168d85f 100644
--- a/libraries/config/include/config/config_utils.hpp
+++ b/libraries/config/include/config/config_utils.hpp
@@ -7,7 +7,7 @@
 #include "common/util.hpp"
 
 namespace taraxa {
-std::string getConfigErr(std::vector<std::string> path);
+std::string getConfigErr(const std::vector<std::string> &path);
 
 Json::Value getConfigData(Json::Value root, const std::vector<std::string> &path, bool optional = false);
 
diff --git a/libraries/config/src/config_utils.cpp b/libraries/config/src/config_utils.cpp
index 599125ae8b..bdef058854 100644
--- a/libraries/config/src/config_utils.cpp
+++ b/libraries/config/src/config_utils.cpp
@@ -2,7 +2,7 @@
 
 namespace taraxa {
 
-std::string getConfigErr(std::vector<std::string> path) {
+std::string getConfigErr(const std::vector<std::string> &path) {
   std::string res = "Error in processing configuration file on param: ";
   for (size_t i = 0; i < path.size(); i++) res += path[i] + ".";
   res += " ";
diff --git a/libraries/core_libs/consensus/src/final_chain/final_chain.cpp b/libraries/core_libs/consensus/src/final_chain/final_chain.cpp
index c4b848cd4e..0f064497dc 100644
--- a/libraries/core_libs/consensus/src/final_chain/final_chain.cpp
+++ b/libraries/core_libs/consensus/src/final_chain/final_chain.cpp
@@ -18,7 +18,6 @@ class FinalChainImpl final : public FinalChain {
   const bool kLightNode = false;
   const uint64_t kLightNodeHistory = 0;
   const uint32_t kMaxLevelsPerPeriod;
-  const uint32_t kRewardsDistributionInterval = 100;
   rewards::Stats rewards_;
 
   // It is not prepared to use more then 1 thread. Examine it if you want to change threads count
diff --git a/libraries/core_libs/network/rpc/eth/LogFilter.cpp b/libraries/core_libs/network/rpc/eth/LogFilter.cpp
index 2130f49fa6..efd332930f 100644
--- a/libraries/core_libs/network/rpc/eth/LogFilter.cpp
+++ b/libraries/core_libs/network/rpc/eth/LogFilter.cpp
@@ -48,14 +48,12 @@ std::vector<LogBloom> LogFilter::bloomPossibilities() const {
 
 bool LogFilter::matches(LogBloom b) const {
   if (!addresses_.empty()) {
-    auto ok = false;
-    for (const auto& i : addresses_) {
-      if (b.containsBloom<3>(sha3(i))) {
-        ok = true;
-        break;
-      }
-    }
-    if (!ok) {
+    if (std::none_of(addresses_.cbegin(), addresses_.cend(), [&b](const auto& i) {
+          if (b.containsBloom<3>(sha3(i))) {
+            return true;
+          }
+          return false;
+        })) {
       return false;
     }
   }
@@ -63,14 +61,13 @@ bool LogFilter::matches(LogBloom b) const {
     if (t.empty()) {
       continue;
     }
-    auto ok = false;
-    for (const auto& i : t) {
-      if (b.containsBloom<3>(sha3(i))) {
-        ok = true;
-        break;
-      }
-    }
-    if (!ok) {
+
+    if (std::none_of(t.cbegin(), t.cend(), [&b](const auto& i) {
+          if (b.containsBloom<3>(sha3(i))) {
+            return true;
+          }
+          return false;
+        })) {
       return false;
     }
   }
diff --git a/libraries/core_libs/network/src/tarcap/packets_handlers/latest/dag_block_packet_handler.cpp b/libraries/core_libs/network/src/tarcap/packets_handlers/latest/dag_block_packet_handler.cpp
index 5903c3d3b0..1d6fb93bf2 100644
--- a/libraries/core_libs/network/src/tarcap/packets_handlers/latest/dag_block_packet_handler.cpp
+++ b/libraries/core_libs/network/src/tarcap/packets_handlers/latest/dag_block_packet_handler.cpp
@@ -67,7 +67,7 @@ void DagBlockPacketHandler::sendBlock(dev::p2p::NodeID const &peer_id, taraxa::D
 
     taraxa::bytes trx_bytes;
     for (uint32_t i = index; i < index + trx_count_to_send; i++) {
-      auto &trx_data = trxs[i]->rlp();
+      auto trx_data = trxs[i]->rlp();
       s << trxs[i]->getHash();
       trx_bytes.insert(trx_bytes.end(), std::begin(trx_data), std::end(trx_data));
     }
diff --git a/libraries/core_libs/storage/src/storage.cpp b/libraries/core_libs/storage/src/storage.cpp
index f9a419ddbc..64144592c2 100644
--- a/libraries/core_libs/storage/src/storage.cpp
+++ b/libraries/core_libs/storage/src/storage.cpp
@@ -923,7 +923,9 @@ void DbStorage::addPbftMgrFieldToBatch(PbftMgrField field, uint32_t value, Batch
 bool DbStorage::getPbftMgrStatus(PbftMgrStatus field) {
   auto status = lookup(toSlice(field), Columns::pbft_mgr_status);
   if (!status.empty()) {
-    return *(bool*)&status[0];
+    bool value;
+    memcpy(&value, status.data(), sizeof(bool));
+    return value;
   }
   return false;
 }