diff --git a/.github/workflows/Build.yml b/.github/workflows/Build.yml
index d3c8d31e5f..09d77dcf3b 100644
--- a/.github/workflows/Build.yml
+++ b/.github/workflows/Build.yml
@@ -78,7 +78,7 @@ jobs:
 
     - name: Build all
       run: docker exec kphp-build-container-${{matrix.os}} bash -c 
-              "cmake -DCMAKE_CXX_COMPILER=${{matrix.compiler}} -DCMAKE_CXX_STANDARD=${{matrix.cpp}} -DADDRESS_SANITIZER=${{matrix.asan}} -DUNDEFINED_SANITIZER=${{matrix.ubsan}} -DPDO_DRIVER_MYSQL=ON -DPDO_DRIVER_PGSQL=ON -DPDO_LIBS_STATIC_LINKING=ON -S ${{env.kphp_root_dir}} -B ${{env.kphp_build_dir}} && make -C ${{env.kphp_build_dir}} -j$(nproc) all"
+              "cmake -DDOWNLOAD_MISSING_LIBRARIES=On -DCMAKE_CXX_COMPILER=${{matrix.compiler}} -DCMAKE_CXX_STANDARD=${{matrix.cpp}} -DADDRESS_SANITIZER=${{matrix.asan}} -DUNDEFINED_SANITIZER=${{matrix.ubsan}} -DPDO_DRIVER_MYSQL=ON -DPDO_DRIVER_PGSQL=ON -DPDO_LIBS_STATIC_LINKING=ON -S ${{env.kphp_root_dir}} -B ${{env.kphp_build_dir}} && make -C ${{env.kphp_build_dir}} -j$(nproc) all"
 
     - name: Run unit tests
       run: docker exec kphp-build-container-${{matrix.os}} bash -c 
diff --git a/.github/workflows/Dockerfile.buster b/.github/workflows/Dockerfile.buster
index 908dbaed10..abd82a6d6b 100644
--- a/.github/workflows/Dockerfile.buster
+++ b/.github/workflows/Dockerfile.buster
@@ -22,7 +22,7 @@ RUN apt-get update && \
       git cmake-data=3.18* cmake=3.18* make g++ gperf netcat \
       python3.7 python3-dev libpython3-dev python3-pip python3-setuptools mysql-server libmysqlclient-dev && \
     pip3 install -r /tmp/requirements.txt && \
-    apt-get install -y --no-install-recommends curl-kphp-vk kphp-timelib libuber-h3-dev libfmt-dev libgtest-dev libgmock-dev libre2-dev libpcre3-dev \
+    apt-get install -y --no-install-recommends curl-kphp-vk kphp-timelib libuber-h3-dev libgtest-dev libgmock-dev libre2-dev libpcre3-dev \
       libzstd-dev libyaml-cpp-dev libnghttp2-dev zlib1g-dev php7.4-dev libldap-dev libkrb5-dev \
       postgresql postgresql-server-dev-all libnuma-dev composer && \
     rm -rf /var/lib/apt/lists/* && \
diff --git a/.github/workflows/Dockerfile.focal b/.github/workflows/Dockerfile.focal
index 255e51a82d..3b07233927 100644
--- a/.github/workflows/Dockerfile.focal
+++ b/.github/workflows/Dockerfile.focal
@@ -15,7 +15,7 @@ RUN apt-get update && \
       git cmake make clang g++ g++-10 gperf netcat \
       python3.7 python3-pip python3.7-distutils python3.7-dev libpython3.7-dev python3-jsonschema python3-setuptools mysql-server libmysqlclient-dev && \
     python3.7 -m pip install pip && python3.7 -m pip install -r /tmp/requirements.txt && \
-    apt-get install -y --no-install-recommends curl-kphp-vk kphp-timelib libuber-h3-dev libfmt-dev libgtest-dev libgmock-dev libre2-dev libpcre3-dev \
+    apt-get install -y --no-install-recommends curl-kphp-vk kphp-timelib libuber-h3-dev libgtest-dev libgmock-dev libre2-dev libpcre3-dev \
       libzstd-dev libyaml-cpp-dev libnghttp2-dev zlib1g-dev php7.4-dev libldap-dev libkrb5-dev \
       postgresql postgresql-server-dev-all libnuma-dev composer unzip && \
     rm -rf /var/lib/apt/lists/*
diff --git a/.github/workflows/Dockerfile.jammy b/.github/workflows/Dockerfile.jammy
index 1dd63369c2..d73aa8ce11 100644
--- a/.github/workflows/Dockerfile.jammy
+++ b/.github/workflows/Dockerfile.jammy
@@ -17,7 +17,7 @@ RUN apt update && \
       git cmake make g++ lld gperf netcat \
       python3.7 python3-pip python3.7-distutils python3.7-dev libpython3.7-dev python3-jsonschema python3-setuptools mysql-server libmysqlclient-dev && \
     python3.7 -m pip install pip && python3.7 -m pip install -r /tmp/requirements.txt && \
-    apt install -y --no-install-recommends curl-kphp-vk kphp-timelib libuber-h3-dev libfmt-dev libgtest-dev libgmock-dev libre2-dev libpcre3-dev \
+    apt install -y --no-install-recommends curl-kphp-vk kphp-timelib libuber-h3-dev libgtest-dev libgmock-dev libre2-dev libpcre3-dev \
       libzstd-dev libyaml-cpp-dev libnghttp2-dev zlib1g-dev php7.4-dev libnuma-dev unzip \
       libldap-dev libkrb5-dev postgresql postgresql-server-dev-all && \
     rm -rf /var/lib/apt/lists/*
diff --git a/cmake/external-libraries.cmake b/cmake/external-libraries.cmake
index f88954a907..74704f1e00 100644
--- a/cmake/external-libraries.cmake
+++ b/cmake/external-libraries.cmake
@@ -9,18 +9,6 @@ function(handle_missing_library LIB_NAME)
     endif()
 endfunction()
 
-find_package(fmt QUIET)
-if(NOT fmt_FOUND)
-    handle_missing_library("fmtlib")
-    FetchContent_Declare(
-            fmt
-            GIT_REPOSITORY https://github.com/fmtlib/fmt
-            GIT_TAG        7.0.3
-    )
-    FetchContent_MakeAvailable(fmt)
-    include_directories(${fmt_SOURCE_DIR}/include)
-    message(STATUS "---------------------")
-endif()
 
 if(KPHP_TESTS)
     find_package(GTest QUIET)
diff --git a/cmake/init-compilation-flags.cmake b/cmake/init-compilation-flags.cmake
index a9c8cf6fe4..b841bdd2c9 100644
--- a/cmake/init-compilation-flags.cmake
+++ b/cmake/init-compilation-flags.cmake
@@ -86,7 +86,7 @@ elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "aarch64")
     add_compile_options(-march=armv8.2-a+crypto)
 endif()
 
-add_compile_options(-Werror -Wall -Wextra -Wunused-function -Wfloat-conversion -Wno-sign-compare
+add_compile_options(-std=c++2b -fexperimental-library -stdlib=libc++ -Werror -Wall -Wextra -Wunused-function -Wfloat-conversion -Wno-sign-compare
                     -Wuninitialized -Wno-redundant-move -Wno-missing-field-initializers)
 
 if(NOT APPLE)
diff --git a/common/wrappers/fmt_format.h b/common/wrappers/fmt_format.h
index 523b1fb0e3..c36646806b 100644
--- a/common/wrappers/fmt_format.h
+++ b/common/wrappers/fmt_format.h
@@ -5,45 +5,11 @@
 #ifndef COMMON_WRAPPERS_FMT_FORMAT_H
 #define COMMON_WRAPPERS_FMT_FORMAT_H
 
-#include <fmt/core.h>
-
-#if __cplusplus <= 201703 || FMT_VERSION < 70000
-#  undef FAST_COMPILATION_FMT
-#endif
-
-#ifndef FAST_COMPILATION_FMT
-#  include <fmt/format.h>
-#endif
-
 #include "common/wrappers/string_view.h"
 
-#ifdef FMT_STRING
-#  define fmt_format(format_s, args...) fmt::format(FMT_STRING(format_s), ##args)
-#  define fmt_print(format_s, args...) fmt::print(FMT_STRING(format_s), ##args)
-#   if FMT_VERSION < 60000
-#    define fmt_fprintf(file, format_s, args...) fmt::print(file, "{}", fmt_format(format_s, ##args))
-#    define fmt_format_to(iter, format_s, args...) fmt::format_to(iter, "{}", fmt_format(format_s, ##args))
-#  else
-#    define fmt_fprintf(file, format_s, args...) fmt::print(file, FMT_STRING(format_s), ##args)
-#    define fmt_format_to(iter, format_s, args...) fmt::format_to(iter, FMT_STRING(format_s), ##args)
-#  endif
-#else
-#  define fmt_format(format_s, args...) fmt::format(format_s, ##args)
-#  define fmt_print(format_s, args...) fmt::print(format_s, ##args)
-#  define fmt_fprintf(file, format_s, args...) fmt::print(file, format_s, ##args)
-#  define fmt_format_to(out_iter, format_s, args...) fmt::format_to(out_iter, format_s, ##args)
-#endif
-
-#ifndef FAST_COMPILATION_FMT
-namespace fmt {
-template<>
-struct formatter<vk::string_view> : fmt::formatter<fmt::string_view> {
-  template<typename FormatCtx>
-  auto format(vk::string_view a, FormatCtx &ctx) {
-    return fmt::formatter<fmt::string_view>::format(fmt::string_view{a.data(), a.size()}, ctx);
-  }
-};
-} // namespace fmt
-#endif
+#  define fmt_format(format_s, args...) std::format(format_s, ##args)
+#  define fmt_print(format_s, args...) std::print(format_s, ##args)
+#  define fmt_fprintf(file, format_s, args...) std::print(file, format_s, ##args)
+#  define fmt_format_to(out_iter, format_s, args...) std::format_to(out_iter, format_s, ##args)
 
 #endif // COMMON_WRAPPERS_FMT_FORMAT_H
diff --git a/compiler/compiler-settings.cpp b/compiler/compiler-settings.cpp
index 67560eeca1..192b4a293a 100644
--- a/compiler/compiler-settings.cpp
+++ b/compiler/compiler-settings.cpp
@@ -274,6 +274,7 @@ void CompilerSettings::init() {
      << " -iquote " << kphp_src_path.get()
      << "objs/generated/auto/runtime"
      << " -fwrapv -Wno-parentheses -Wno-trigraphs"
+     << "-std=c++2b -fexperimental-library -stdlib=libc++"
      << " -fno-strict-aliasing -fno-omit-frame-pointer";
 #ifdef __x86_64__
   ss << " -march=sandybridge";
@@ -289,13 +290,6 @@ void CompilerSettings::init() {
   if (vk::contains(cxx.get(), "clang")) {
     ss << " -Wno-invalid-source-encoding";
   }
-  #if __cplusplus <= 201703L
-    ss << " -std=c++17";
-  #elif __cplusplus <= 202002L
-    ss << " -std=c++20";
-  #else
-    #error unsupported __cplusplus value
-  #endif
 
   std::string cxx_default_flags = ss.str();
 
diff --git a/compiler/compiler.cmake b/compiler/compiler.cmake
index 6ae6aadadf..0ae42e7dbb 100644
--- a/compiler/compiler.cmake
+++ b/compiler/compiler.cmake
@@ -265,7 +265,7 @@ add_executable(kphp2cpp ${KPHP_COMPILER_DIR}/kphp2cpp.cpp)
 target_include_directories(kphp2cpp PUBLIC ${KPHP_COMPILER_DIR})
 
 prepare_cross_platform_libs(COMPILER_LIBS yaml-cpp re2)
-set(COMPILER_LIBS vk::kphp2cpp_src vk::tlo_parsing_src vk::popular_common ${COMPILER_LIBS} fmt::fmt OpenSSL::Crypto pthread)
+set(COMPILER_LIBS vk::kphp2cpp_src vk::tlo_parsing_src vk::popular_common ${COMPILER_LIBS}  OpenSSL::Crypto pthread)
 if(NOT APPLE)
     list(APPEND COMPILER_LIBS stdc++fs)
 endif()
diff --git a/test.cpp b/test.cpp
new file mode 100644
index 0000000000..74452fb087
--- /dev/null
+++ b/test.cpp
@@ -0,0 +1,6 @@
+#include <format>
+#include <iostream>
+#include <iterator>
+int main() {
+    std::format_to(std::ostreambuf_iterator<char>(std::cout), "Hello!\n");
+}