diff --git a/.github/workflows/analyzers.yml b/.github/workflows/analyzers.yml
index be5e9a13e2..65876593d8 100644
--- a/.github/workflows/analyzers.yml
+++ b/.github/workflows/analyzers.yml
@@ -4,7 +4,7 @@ on: [ push, pull_request ]
 
 jobs:
   clang_format:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository
     steps:
       - name: Checkout
@@ -24,7 +24,7 @@ jobs:
 
 
   cmake_format:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository
     steps:
       - name: Checkout
@@ -38,7 +38,7 @@ jobs:
 
 
   code_inspector:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     if: github.event_name == 'push' || github.event.pull_request.head.repo.full_name != github.repository
     steps:
       - name: Checkout
diff --git a/.github/workflows/build_deploy.yml b/.github/workflows/build_deploy.yml
index 24da36bc1e..beecbcf9bf 100644
--- a/.github/workflows/build_deploy.yml
+++ b/.github/workflows/build_deploy.yml
@@ -15,7 +15,7 @@ env:
 jobs:
   prepare_build:
     name: Prepare Build
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     outputs:
       ci_tag: ${{ steps.set_vars.outputs.ci_tag }}
       tag_created: ${{ steps.set_vars.outputs.tag_created }}
@@ -78,7 +78,7 @@ jobs:
     name: Linux [${{ matrix.network }}]
     needs: prepare_build
     if: ${{ needs.prepare_build.outputs.tag_created == 'true' }}
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     timeout-minutes: 90
     strategy:
       matrix:
@@ -115,7 +115,7 @@ jobs:
     name: Docker [${{ matrix.network }}]
     needs: prepare_build
     if: ${{ needs.prepare_build.outputs.tag_created == 'true' }}
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     timeout-minutes: 90
     strategy:
       matrix:
diff --git a/.github/workflows/changelog.yml b/.github/workflows/changelog.yml
index 63115c1cc2..ac79a59185 100644
--- a/.github/workflows/changelog.yml
+++ b/.github/workflows/changelog.yml
@@ -27,7 +27,7 @@ env:
 
 jobs:
   changelog_job:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     timeout-minutes: 90
     steps:
       - name: Sets the tag and repo variables (to build)
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index cbdeffeeff..a0dab2afbe 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -16,7 +16,7 @@ jobs:
     env:
       LCOV: 1
       COMPILER: gcc
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       matrix:
         TEST_USE_ROCKSDB: [0, 1]
@@ -29,7 +29,8 @@ jobs:
           submodules: "recursive"
       - name: Fetch Deps
         run: |
-          sudo apt-get update -qq && sudo apt-get install -yqq build-essential g++ wget python zlib1g-dev qt5-default \
+          sudo apt-get update -qq && sudo apt-get install -yqq build-essential g++ wget python3 zlib1g-dev \
+          qtbase5-dev qtchooser qt5-qmake qtbase5-dev-tools \
           valgrind xorg xvfb xauth xfonts-100dpi xfonts-75dpi xfonts-scalable xfonts-cyrillic ocl-icd-opencl-dev \
           git lcov python3-pip
           wget -O cmake_install.sh https://github.com/Kitware/CMake/releases/download/v3.15.4/cmake-3.15.4-Linux-x86_64.sh
@@ -46,7 +47,7 @@ jobs:
           parallel: true
   finish:
     needs: coverage_test
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
       - uses: coverallsapp/github-action@8cbef1dea373ebce56de0a14c68d6267baa10b44
         with:
diff --git a/.github/workflows/flamegraphs.yml b/.github/workflows/flamegraphs.yml
index a0166fb857..cf156f51b8 100644
--- a/.github/workflows/flamegraphs.yml
+++ b/.github/workflows/flamegraphs.yml
@@ -10,7 +10,7 @@ jobs:
       fail-fast: false
       matrix:
         TEST_NAME: [large_confirmation, large_direct_processing] # slow_test --gtest_filter=flamegraph.[name]
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     env:
       TEST_NAME: ${{ matrix.TEST_NAME }}
       BACKEND: lmdb
diff --git a/.github/workflows/prepare_release.yml b/.github/workflows/prepare_release.yml
index 6b0903c6de..0756e81920 100644
--- a/.github/workflows/prepare_release.yml
+++ b/.github/workflows/prepare_release.yml
@@ -4,7 +4,7 @@ on:
 
 jobs:
   promote_reference:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5abbb3106e..900b53f878 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -356,7 +356,7 @@ set(CMAKE_C_STANDARD 11)
 set(CMAKE_C_STANDARD_REQUIRED ON)
 # set(CMAKE_C_EXTENSIONS OFF)
 
-set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD 23)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 # set(CMAKE_CXX_EXTENSIONS OFF)
 
diff --git a/ci/prepare/linux/prepare-gcc.sh b/ci/prepare/linux/prepare-gcc.sh
index d06a2644c3..a32acc2c8a 100755
--- a/ci/prepare/linux/prepare-gcc.sh
+++ b/ci/prepare/linux/prepare-gcc.sh
@@ -1,2 +1,12 @@
 #!/bin/bash
-set -euox pipefail
\ No newline at end of file
+set -euox pipefail
+
+# Install GCC 13 for C++23 support (std::unreachable, etc.)
+apt-get install -yqq software-properties-common
+add-apt-repository -y ppa:ubuntu-toolchain-r/test
+apt-get update -qq
+apt-get install -yqq gcc-13 g++-13
+
+# Set GCC 13 as default
+update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-13 100
+update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-13 100
\ No newline at end of file
diff --git a/docker/ci/Dockerfile-base b/docker/ci/Dockerfile-base
index bf9f14085d..d29fa51b55 100644
--- a/docker/ci/Dockerfile-base
+++ b/docker/ci/Dockerfile-base
@@ -1,4 +1,4 @@
-FROM ubuntu:22.04
+FROM ubuntu:24.04
 
 ENV DEBIAN_FRONTEND=noninteractive
 
diff --git a/docker/ci/Dockerfile-rhel b/docker/ci/Dockerfile-rhel
index 5eb6c733ae..caddafa346 100644
--- a/docker/ci/Dockerfile-rhel
+++ b/docker/ci/Dockerfile-rhel
@@ -6,5 +6,5 @@ RUN yum update -y
 RUN yum install -y git wget openssl bzip2
 RUN yum install -y rpm-build
 RUN yum install -y glibc-devel glibc-headers make which
-RUN yum install -y cmake gcc-toolset-12
+RUN yum install -y cmake gcc-toolset-13
 RUN yum install -y python38
diff --git a/docker/node/Dockerfile b/docker/node/Dockerfile
index 469aada5f8..29e34fc0d1 100644
--- a/docker/node/Dockerfile
+++ b/docker/node/Dockerfile
@@ -1,4 +1,4 @@
-FROM ubuntu:22.04 AS builder
+FROM ubuntu:24.04 AS builder
 
 ARG COMPILER=gcc
 ARG NANO_NETWORK=live
@@ -24,7 +24,7 @@ ARG SANITIZER
 RUN ci/build-node.sh
 RUN echo ${NANO_NETWORK} >/etc/nano-network
 
-FROM ubuntu:22.04
+FROM ubuntu:24.04
 
 RUN groupadd --gid 1000 nanocurrency && \
     useradd --uid 1000 --gid nanocurrency --shell /bin/bash --create-home nanocurrency