diff --git a/cmake/ChaoticGen.cmake b/cmake/ChaoticGen.cmake
index 5302daf51038..3f8828ae0c3e 100644
--- a/cmake/ChaoticGen.cmake
+++ b/cmake/ChaoticGen.cmake
@@ -136,7 +136,7 @@ function(userver_target_generate_chaotic TARGET)
     if(PARSE_PARSE_EXTRA_FORMATS)
         list(APPEND CHAOTIC_ARGS "--parse-extra-formats")
     endif()
-    
+
     if(PARSE_NO_SAX_PARSE)
         list(APPEND CHAOTIC_ARGS "--no-sax-parse")
     endif()
diff --git a/conanfile.py b/conanfile.py
index 8d4f042ad106..7f36f8be5a7f 100644
--- a/conanfile.py
+++ b/conanfile.py
@@ -1,6 +1,7 @@
 # pylint: disable=no-member
 import os
 import platform
+import re
 
 from conan import ConanFile
 from conan.errors import ConanInvalidConfiguration
@@ -12,6 +13,8 @@
 from conan.tools.files import copy
 from conan.tools.files import export_conandata_patches
 from conan.tools.files import get
+from conan.tools.files import load
+from conan.tools.system import package_manager
 from conan.tools.scm import Git
 
 required_conan_version = '>=2.8.0'  # pylint: disable=invalid-name
@@ -78,6 +81,17 @@ class UserverConan(ConanFile):
         're2/*:with_icu': True,
     }
 
+    def set_version(self):
+        content = load(
+            self,
+            os.path.join(
+                os.path.dirname(os.path.realpath(__file__)),
+                'version.txt',
+            ),
+        )
+        hotfix_version = '4'
+        self.version = content.strip() + f".{hotfix_version}"  # pylint: disable=attribute-defined-outside-init
+
     def source(self):
         known_version = (self.conan_data or {}).get('sources', {}).get(self.version)
         if known_version:
@@ -102,31 +116,38 @@ def export_sources(self):
     def layout(self):
         cmake_layout(self)
 
+    def configure(self):
+        # Control dependencies of our dependencies based on current options
+        if self.options.with_jemalloc:
+            self.options['jemalloc'].enable_prof = True
+
     def requirements(self):
-        self.requires('boost/[>=1.83 <1.88]', transitive_headers=True)
+        self.requires('boost/1.90.0', transitive_headers=True, options={
+            "with_stacktrace_backtrace": True,
+            "without_stacktrace": False,
+            "without_cobalt": True
+        })
         self.requires('c-ares/[^1.33]')
         self.requires('cctz/[^2.4]', transitive_headers=True)
-
         self.requires('concurrentqueue/[^1.0.5]', transitive_headers=True)
-
         self.requires('cryptopp/[^8.9]')
-        self.requires('fmt/[>=8.1.1 <13]', transitive_headers=True)
+        self.requires('fmt/11.2.0', transitive_headers=True)
         self.requires('libiconv/[^1.17]')
         self.requires('libnghttp2/[^1.61]')
-        self.requires('libcurl/[>=7.86.0 <7.88 || >8.1.2]')
+        self.requires('libcurl/8.12.1')
         self.requires('libev/[^4.33]')
-        self.requires('openssl/[>=1.1 <4]')
+        self.requires('openssl/[>=3.6.2 <4]')
         self.requires('rapidjson/[>=cci.20230929 <cci.20230930]', transitive_headers=True)
         self.requires('yaml-cpp/[>=0.8.0 <=0.9.0]')
         self.requires('zlib/[^1.3]')
         self.requires('zstd/[^1.5]')
         self.requires('icu/[>=74.1 <77]', force=True)
-        self.requires('re2/[>=20230301]')
+        self.requires('re2/[>=20251105]')
 
         if self.options.with_jemalloc:
             self.requires('jemalloc/[^5.3]')
         if self.options.with_grpc or self.options.with_clickhouse:
-            self.requires('abseil/20240722.1', force=True)
+            self.requires('abseil/20260107.1', transitive_headers=True, transitive_libs=True, force=True)
         if self.options.with_grpc:
             self.requires(
                 'grpc/[^1.69.0]',
@@ -134,7 +155,7 @@ def requirements(self):
                 transitive_libs=True,
             )
             self.requires(
-                'protobuf/[^5.27]',
+                'protobuf/6.33.5',
                 transitive_headers=True,
                 transitive_libs=True,
                 force=True,
@@ -145,12 +166,12 @@ def requirements(self):
             # without system package. We use system package.
             #
             # `<16` is due to link errors `undefined reference to `gss_release_buffer'`
-            self.requires('libpq/[>=14.9 <16]')
+            self.requires('libpq/[>=15.17 <16]')
         if self.options.with_mongodb or self.options.with_kafka:
             self.requires('cyrus-sasl/[^2.1]')
         if self.options.with_mongodb:
             self.requires(
-                'mongo-c-driver/[^1.30]',
+                'mongo-c-driver/1.30.3',
                 transitive_headers=True,
                 transitive_libs=True,
             )
@@ -170,7 +191,7 @@ def requirements(self):
                 transitive_libs=True,
             )
             self.requires(
-                'benchmark/[>=1.9 <3]',
+                'benchmark/[>=1.9.5 <3]',
                 transitive_headers=True,
                 transitive_libs=True,
             )
diff --git a/core/include/userver/utils/statistics/system_statistics.hpp b/core/include/userver/utils/statistics/system_statistics.hpp
new file mode 100644
index 000000000000..b91dd41a22af
--- /dev/null
+++ b/core/include/userver/utils/statistics/system_statistics.hpp
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <cstdint>
+#include <optional>
+#include <string_view>
+
+#include <userver/utils/statistics/fwd.hpp>
+
+USERVER_NAMESPACE_BEGIN
+
+namespace utils::statistics::impl {
+
+struct SystemStats {
+    std::optional<double> cpu_time_sec;
+    std::optional<std::int64_t> rss_kb;
+    std::optional<std::int64_t> open_files;
+    std::optional<std::int64_t> major_pagefaults;
+    std::optional<std::int64_t> io_read_bytes;
+    std::optional<std::int64_t> io_write_bytes;
+};
+
+void DumpMetric(Writer& writer, const SystemStats& stats);
+
+SystemStats GetSelfSystemStatistics();
+SystemStats GetSystemStatisticsByExeName(std::string_view name);
+
+}  // namespace utils::statistics::impl
+
+USERVER_NAMESPACE_END
diff --git a/core/include/userver/utils/statistics/system_statistics_collector.hpp b/core/include/userver/utils/statistics/system_statistics_collector.hpp
index 59eed687ba64..9f5d1ef70f72 100644
--- a/core/include/userver/utils/statistics/system_statistics_collector.hpp
+++ b/core/include/userver/utils/statistics/system_statistics_collector.hpp
@@ -8,7 +8,7 @@
 #include <userver/concurrent/variable.hpp>
 #include <userver/engine/task/task_processor_fwd.hpp>
 #include <userver/utils/periodic_task.hpp>
-#include <utils/statistics/system_statistics.hpp>
+#include <userver/utils/statistics/system_statistics.hpp>
 
 USERVER_NAMESPACE_BEGIN
 
diff --git a/core/src/components/run.cpp b/core/src/components/run.cpp
index a8de04730048..f85a2fd42953 100644
--- a/core/src/components/run.cpp
+++ b/core/src/components/run.cpp
@@ -205,7 +205,13 @@ void CatchSignalsLoop(impl::Manager& manager, RunMode run_mode, utils::SignalCat
         } else if (signum == SIGUSR1 || signum == SIGUSR2) {
             LOG_INFO() << "Signal caught: " << utils::strsignal(signum);
             manager.OnSignal(signum);
-        } else {
+        }
+#ifdef __APPLE__
+        else if(signum == -1){
+            LOG_WARNING() << "sigwait false positive, ingnoring... ";
+        }
+#endif
+        else {
             LOG_WARNING() << "Got unexpected signal: " << signum << " (" << utils::strsignal(signum) << ')';
             UASSERT_MSG(false, "unexpected signal");
         }
diff --git a/core/src/server/http/http_request_parser.cpp b/core/src/server/http/http_request_parser.cpp
index a2469413477c..ac01b4569eeb 100644
--- a/core/src/server/http/http_request_parser.cpp
+++ b/core/src/server/http/http_request_parser.cpp
@@ -31,7 +31,7 @@ bool IsWebSocketUpgradeRequest(std::string_view req) {
     if (it == req.end()) {
         return false;
     }
-    while (*it == ' ' && it != req.end()) {
+    while (it != req.end() && (*it == ' ' || *it == '\t')) {
         ++it;
     }
     const auto end = it + kWebsocketUpgradeHeaderValue.size();
diff --git a/core/src/tracing/span.cpp b/core/src/tracing/span.cpp
index 457e73064cea..a9ffd51c5903 100644
--- a/core/src/tracing/span.cpp
+++ b/core/src/tracing/span.cpp
@@ -126,7 +126,7 @@ Span::Impl::Impl(
 )
     : name_(std::move(name)),
       is_no_log_span_(IsNoLogSpan(name_)),
-      log_level_(is_no_log_span_ ? logging::Level::kNone : logging::Level::kInfo),
+      log_level_(is_no_log_span_ ? logging::Level::kNone : logging::Level::kTrace),
       reference_type_(reference_type),
       source_location_(source_location),
       trace_id_(parent ? utils::SmallString<kTypicalTraceIdSize>(parent->GetTraceId()) : GenerateTraceId()),
diff --git a/core/src/utils/periodic_task.cpp b/core/src/utils/periodic_task.cpp
index fff6ffe7f753..aa2e3fb95bc3 100644
--- a/core/src/utils/periodic_task.cpp
+++ b/core/src/utils/periodic_task.cpp
@@ -128,12 +128,12 @@ void PeriodicTask::Stop() noexcept {
     const auto name = impl_->GetName();
     try {
         if (IsRunning()) {
-            LOG_INFO() << "Stopping PeriodicTask with name=" << name;
+            LOG_DEBUG() << "Stopping PeriodicTask with name=" << name;
             impl_->task.SyncCancel();
             impl_->changed_event.Reset();
             impl_->should_force_step = false;
             impl_->task = engine::TaskWithResult<void>();
-            LOG_INFO() << "Stopped PeriodicTask with name=" << name;
+            LOG_DEBUG() << "Stopped PeriodicTask with name=" << name;
         }
     } catch (std::exception& e) {
         LOG_ERROR() << "Exception while stopping PeriodicTask with name=" << name << ": " << e;
diff --git a/core/src/utils/signal_catcher.cpp b/core/src/utils/signal_catcher.cpp
index 2383ae02ee4f..f14344776218 100644
--- a/core/src/utils/signal_catcher.cpp
+++ b/core/src/utils/signal_catcher.cpp
@@ -22,7 +22,12 @@ SignalCatcher::~SignalCatcher() noexcept(false) {
 int SignalCatcher::Catch() {
     int signum = -1;
     utils::CheckSyscall(sigwait(&sigset_, &signum), "waiting for signal");
+    //https://developer.apple.com/library/archive/documentation/System/Conceptual/ManPages_iPhoneOS/man2/sigwait.2.html
+    //on mac os sigwait sometime returns 0 value(success) and signum -1
+    //looks like a bug
+#ifndef __APPLE__
     UASSERT(signum != -1);
+#endif
     return signum;
 }
 
diff --git a/core/src/utils/statistics/impl/histogram_view_utils.hpp b/core/src/utils/statistics/impl/histogram_view_utils.hpp
index 28f18ee279a7..a5be4cffb19a 100644
--- a/core/src/utils/statistics/impl/histogram_view_utils.hpp
+++ b/core/src/utils/statistics/impl/histogram_view_utils.hpp
@@ -54,7 +54,7 @@ inline void AddNonAtomic(std::atomic<double>& to, std::uint64_t x) {
 }
 
 inline void AddAtomic(std::atomic<double>& to, double x) {
-#if __cplusplus >= 202002L && (!defined(_LIBCPP_VERSION) || _LIBCPP_VERSION >= 180000)
+#if !defined(__APPLE__) && __cplusplus >= 202002L && (!defined(_LIBCPP_VERSION) || _LIBCPP_VERSION >= 180000)
     to += x;
 #else
     double expected = to.load();
diff --git a/core/src/utils/statistics/system_statistics.cpp b/core/src/utils/statistics/system_statistics.cpp
index 0a6609b64c9a..5a4d1af367ca 100644
--- a/core/src/utils/statistics/system_statistics.cpp
+++ b/core/src/utils/statistics/system_statistics.cpp
@@ -1,4 +1,4 @@
-#include <utils/statistics/system_statistics.hpp>
+#include <userver/utils/statistics/system_statistics.hpp>
 
 #ifdef __APPLE__
 #include <mach/mach.h>
diff --git a/grpc/src/ugrpc/client/client_factory_component.cpp b/grpc/src/ugrpc/client/client_factory_component.cpp
index daef60bd7933..8a8333a3d92f 100644
--- a/grpc/src/ugrpc/client/client_factory_component.cpp
+++ b/grpc/src/ugrpc/client/client_factory_component.cpp
@@ -142,6 +142,11 @@ ClientFactoryComponent::ClientFactoryComponent(
 ClientFactory& ClientFactoryComponent::GetFactory() { return *factory_; }
 
 yaml_config::Schema ClientFactoryComponent::GetStaticConfigSchema() {
+    /*
+    *    auth-token:
+        type: string
+        description: auth token name from secdist
+     */
     return yaml_config::MergeSchemasFromResource<
         impl::MiddlewareRunnerComponentBase>("src/ugrpc/client/client_factory_component.yaml");
 }
diff --git a/grpc/src/ugrpc/client/impl/client_factory_config.cpp b/grpc/src/ugrpc/client/impl/client_factory_config.cpp
index da5835385722..044a42da35c0 100644
--- a/grpc/src/ugrpc/client/impl/client_factory_config.cpp
+++ b/grpc/src/ugrpc/client/impl/client_factory_config.cpp
@@ -6,6 +6,8 @@
 #include <userver/utils/trivial_map.hpp>
 
 #include <userver/ugrpc/impl/to_string.hpp>
+#include <userver/fs/blocking/read.hpp>
+#include <userver/logging/log.hpp>
 
 USERVER_NAMESPACE_BEGIN
 
diff --git a/grpc/src/ugrpc/server/service_component_base.cpp b/grpc/src/ugrpc/server/service_component_base.cpp
index a905473054e3..98798eb341de 100644
--- a/grpc/src/ugrpc/server/service_component_base.cpp
+++ b/grpc/src/ugrpc/server/service_component_base.cpp
@@ -1,3 +1,5 @@
+#include <string>
+#include <string_view>
 #include <userver/ugrpc/server/service_component_base.hpp>
 
 #include <google/protobuf/descriptor.h>
@@ -22,14 +24,25 @@
 
 USERVER_NAMESPACE_BEGIN
 
-namespace ugrpc::server {
+namespace {
+
+std::string GetServerName(const components::ComponentConfig& config) {
+    static constexpr std::string_view kServerNameKey = "server-name";
+    if (config.HasMember(kServerNameKey)) {
+        return config[kServerNameKey].As<std::string>();
+    }
+    return "grpc-server";
+}
 
+}  // namespace
+
+namespace ugrpc::server {
 ServiceComponentBase::ServiceComponentBase(
     const components::ComponentConfig& config,
     const components::ComponentContext& context
 )
     : impl::MiddlewareRunnerComponentBase(config, context, MiddlewarePipelineComponent::kName),
-      server_(context.FindComponent<ServerComponent>()),
+      server_(context.FindComponent<ServerComponent>(GetServerName(config))),
       config_(server_.ParseServiceConfig(config, context)),
       component_name_(context.GetComponentName())
 {}
diff --git a/grpc/src/ugrpc/server/service_component_base.yaml b/grpc/src/ugrpc/server/service_component_base.yaml
index 2ebab67b8efd..36ad7dd7e445 100644
--- a/grpc/src/ugrpc/server/service_component_base.yaml
+++ b/grpc/src/ugrpc/server/service_component_base.yaml
@@ -6,6 +6,10 @@ properties:
         type: string
         description: the task processor to use for responses
         default: uses grpc-server.service-defaults.task-processor
+    server-name:
+        type: string
+        description: the name of the server to use
+        defaultDescription: grpc-server
     status-codes-log-level:
         type: object
         properties: {}
diff --git a/universal/CMakeLists.txt b/universal/CMakeLists.txt
index e8b6e73a3a8f..09f97605d58a 100644
--- a/universal/CMakeLists.txt
+++ b/universal/CMakeLists.txt
@@ -73,6 +73,9 @@ userver_target_cxx_compile_options_if_supported(
     "-Wlogical-op"
     "-Wformat=2"
     "-Wno-error=deprecated-declarations"
+    # protobuf 6 generated code uses absl_nullable/absl_nonnull (-> _Nullable/_Nonnull),
+    # which are clang extensions and trip -Wpedantic -Werror in Debug builds.
+    "-Wno-nullability-extension"
     # This warning is unavoidable in generic code with templates
     "-Wno-useless-cast"
     # gcc complains: the ABI of passing union with ‘long double’ has changed in GCC 4.4
diff --git a/version.txt b/version.txt
index f0d55097e0e0..9f55b2ccb5f2 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-3.1-rc
+3.0