diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index c45bcdfbc7d..6ad1160845f 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -59,7 +59,7 @@ jobs:
           wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
           sudo add-apt-repository 'deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-16 main'
           sudo apt-get update
-          sudo apt-get install -y clang-format-16 ccache e2fsprogs gcc-12 g++-12 libstdc++-12-dev libmpfr-dev libmpc-dev ninja-build optipng qemu-utils qemu-system-i386 unzip generate-ninja libegl1-mesa-dev
+          sudo apt-get install -y clang-format-16 ccache e2fsprogs gcc-13 g++-13 libstdc++-13-dev libmpfr-dev libmpc-dev ninja-build optipng qemu-utils qemu-system-i386 unzip generate-ninja libegl1-mesa-dev
           if ${{ matrix.arch == 'aarch64' }}; then
             # FIXME: Remove this when we no longer build our own Qemu binary.
             sudo apt-get install libgtk-3-dev libpixman-1-dev libsdl2-dev libslirp-dev
@@ -72,7 +72,7 @@ jobs:
           python -m pip install --upgrade pip
           pip install flake8 requests
       - name: Check versions
-        run: set +e; g++ --version; g++-12 --version; clang-format --version; clang-format-16 --version; prettier --version; python --version; python3 --version; ninja --version; flake8 --version; ccache --version; qemu-system-i386 --version; gn --version
+        run: set +e; g++ --version; g++-13 --version; clang-format --version; clang-format-16 --version; prettier --version; python --version; python3 --version; ninja --version; flake8 --version; ccache --version; qemu-system-i386 --version; gn --version
 
       - name: Enable KVM group perms
         run: |
@@ -193,8 +193,8 @@ jobs:
             -DSERENITY_ARCH=${{ matrix.arch }} \
             -DSERENITY_TOOLCHAIN=GNU \
             -DBUILD_LAGOM=ON \
-            -DCMAKE_C_COMPILER=gcc-12 \
-            -DCMAKE_CXX_COMPILER=g++-12 \
+            -DCMAKE_C_COMPILER=gcc-13 \
+            -DCMAKE_CXX_COMPILER=g++-13 \
             -DENABLE_ALL_DEBUG_FACILITIES=ON \
             -DENABLE_PCI_IDS_DOWNLOAD=OFF \
             -DENABLE_USB_IDS_DOWNLOAD=OFF
@@ -207,8 +207,8 @@ jobs:
           cmake -S Meta/CMake/Superbuild -B Build/superbuild -GNinja \
             -DSERENITY_ARCH=${{ matrix.arch }} \
             -DSERENITY_TOOLCHAIN=GNU \
-            -DCMAKE_C_COMPILER=gcc-12 \
-            -DCMAKE_CXX_COMPILER=g++-12 \
+            -DCMAKE_C_COMPILER=gcc-13 \
+            -DCMAKE_CXX_COMPILER=g++-13 \
             -DENABLE_UNDEFINED_SANITIZER=ON \
             -DUNDEFINED_BEHAVIOR_IS_FATAL=ON \
             -DDUMP_REGIONS_ON_CRASH=ON \
diff --git a/.github/workflows/libjs-test262.yml b/.github/workflows/libjs-test262.yml
index 10eb35ec2bc..bd4b57fc7da 100644
--- a/.github/workflows/libjs-test262.yml
+++ b/.github/workflows/libjs-test262.yml
@@ -48,7 +48,7 @@ jobs:
       - name: Install dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install -y ninja-build unzip gcc-12 g++-12 jq wget
+          sudo apt-get install -y ninja-build unzip gcc-13 g++-13 jq wget
           test -e /opt/wabt-1.0.27 || (
             cd /tmp
             wget https://github.com/WebAssembly/wabt/releases/download/1.0.27/wabt-1.0.27-ubuntu.tar.gz
@@ -68,7 +68,7 @@ jobs:
           pip install -r libjs-test262/requirements.txt
 
       - name: Check versions
-        run: set +e; g++ --version; g++-12 --version; python --version; python3 --version; ninja --version
+        run: set +e; g++ --version; g++-13 --version; python --version; python3 --version; ninja --version
 
       - name: TimeZoneData cache
         uses: actions/cache@v4
@@ -98,8 +98,8 @@ jobs:
         run: |
           env PATH="/opt/wabt-1.0.27/bin:$PATH" \
             cmake -GNinja -B Build \
-              -DCMAKE_C_COMPILER=gcc-12 \
-              -DCMAKE_CXX_COMPILER=g++-12 \
+              -DCMAKE_C_COMPILER=gcc-13 \
+              -DCMAKE_CXX_COMPILER=g++-13 \
               -DWASM_SPEC_TEST_SKIP_FORMATTING=ON \
               -DINCLUDE_WASM_SPEC_TESTS=ON \
               -DSERENITY_SOURCE_DIR=${{ env.SERENITY_SOURCE_DIR }} \
diff --git a/.github/workflows/pvs-studio-static-analysis.yml b/.github/workflows/pvs-studio-static-analysis.yml
index cf5d364628d..df8a4c980ac 100644
--- a/.github/workflows/pvs-studio-static-analysis.yml
+++ b/.github/workflows/pvs-studio-static-analysis.yml
@@ -28,10 +28,10 @@ jobs:
           wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
           sudo add-apt-repository 'deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-16 main'
           sudo apt-get update
-          sudo apt-get install -y clang-format-16 gcc-12 g++-12 libstdc++-12-dev libmpfr-dev libmpc-dev ninja-build unzip pvs-studio
+          sudo apt-get install -y clang-format-16 gcc-13 g++-13 libstdc++-13-dev libmpfr-dev libmpc-dev ninja-build unzip pvs-studio
 
       - name: Check versions
-        run: set +e; g++ --version; g++-12 --version; ninja --version;
+        run: set +e; g++ --version; g++-13 --version; ninja --version;
 
       - name: Prepare useful stamps
         id: stamps
@@ -89,8 +89,8 @@ jobs:
           cmake -S Meta/CMake/Superbuild -B Build/superbuild -GNinja \
             -DSERENITY_ARCH=${{ env.PVS_STUDIO_ANALYSIS_ARCH }} \
             -DSERENITY_TOOLCHAIN=GNU \
-            -DCMAKE_C_COMPILER=gcc-12 \
-            -DCMAKE_CXX_COMPILER=g++-12 \
+            -DCMAKE_C_COMPILER=gcc-13 \
+            -DCMAKE_CXX_COMPILER=g++-13 \
             -DENABLE_PCI_IDS_DOWNLOAD=OFF \
             -DENABLE_USB_IDS_DOWNLOAD=OFF
 
diff --git a/.github/workflows/serenity-js-artifacts.yml b/.github/workflows/serenity-js-artifacts.yml
index 0c83c6e5ef5..939a79583af 100644
--- a/.github/workflows/serenity-js-artifacts.yml
+++ b/.github/workflows/serenity-js-artifacts.yml
@@ -29,7 +29,7 @@ jobs:
       - name: Install dependencies Ubuntu
         run: |
           sudo apt-get update
-          sudo apt-get install -y ninja-build unzip gcc-12 g++-12
+          sudo apt-get install -y ninja-build unzip gcc-13 g++-13
         if: ${{ matrix.os == 'ubuntu-22.04' }}
 
       - name: Install dependencies macOS
@@ -45,7 +45,7 @@ jobs:
 
       - name: Check versions Ubuntu
         run: |
-          ninja --version; gcc-12 --version; g++-12 --version
+          ninja --version; gcc-13 --version; g++-13 --version
         if: ${{ matrix.os == 'ubuntu-22.04' }}
 
       - name: Check versions macOS
@@ -80,8 +80,8 @@ jobs:
       - name: Create build directory Ubuntu
         run: |
           cmake -S Meta/Lagom -B Build -G Ninja \
-            -DCMAKE_C_COMPILER=gcc-12 \
-            -DCMAKE_CXX_COMPILER=g++-12 \
+            -DCMAKE_C_COMPILER=gcc-13 \
+            -DCMAKE_CXX_COMPILER=g++-13 \
             -DBUILD_LAGOM=ON
         if: ${{ matrix.os == 'ubuntu-22.04' }}
 
diff --git a/.github/workflows/sonar-cloud-static-analysis.yml b/.github/workflows/sonar-cloud-static-analysis.yml
index a3730060d39..55e64ad6bf2 100644
--- a/.github/workflows/sonar-cloud-static-analysis.yml
+++ b/.github/workflows/sonar-cloud-static-analysis.yml
@@ -60,10 +60,10 @@ jobs:
           wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
           sudo add-apt-repository 'deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-16 main'
           sudo apt-get update
-          sudo apt-get install -y clang-format-16 gcc-12 g++-12 libstdc++-12-dev libmpfr-dev libmpc-dev ninja-build unzip
+          sudo apt-get install -y clang-format-16 gcc-13 g++-13 libstdc++-13-dev libmpfr-dev libmpc-dev ninja-build unzip
 
       - name: Check versions
-        run: set +e; g++ --version; g++-12 --version; ninja --version;
+        run: set +e; g++ --version; g++-13 --version; ninja --version;
 
       - name: Prepare useful stamps
         id: stamps
@@ -121,8 +121,8 @@ jobs:
           cmake -S Meta/CMake/Superbuild -B Build/superbuild -GNinja \
             -DSERENITY_ARCH=${{ env.SONAR_ANALYSIS_ARCH }} \
             -DSERENITY_TOOLCHAIN=GNU \
-            -DCMAKE_C_COMPILER=gcc-12 \
-            -DCMAKE_CXX_COMPILER=g++-12 \
+            -DCMAKE_C_COMPILER=gcc-13 \
+            -DCMAKE_CXX_COMPILER=g++-13 \
             -DENABLE_PCI_IDS_DOWNLOAD=OFF \
             -DENABLE_USB_IDS_DOWNLOAD=OFF
 
diff --git a/.github/workflows/wasm.yml b/.github/workflows/wasm.yml
index 74e1719d264..f242cab74f8 100644
--- a/.github/workflows/wasm.yml
+++ b/.github/workflows/wasm.yml
@@ -20,7 +20,7 @@ jobs:
       - name: "Install Ubuntu dependencies"
         run: |
           sudo apt-get update
-          sudo apt-get install -y ninja-build gcc-12 g++-12 libstdc++-12-dev
+          sudo apt-get install -y ninja-build gcc-13 g++-13 libstdc++-13-dev
       - name: "Install emscripten"
         uses: mymindstorm/setup-emsdk@v14
         with:
@@ -64,8 +64,8 @@ jobs:
             -S ${{ github.workspace }}/Meta/Lagom \
             -DBUILD_LAGOM=OFF \
             -DSERENITY_CACHE_DIR=${{ github.workspace }}/Build/caches \
-            -DCMAKE_C_COMPILER=gcc-12 \
-            -DCMAKE_CXX_COMPILER=g++-12 \
+            -DCMAKE_C_COMPILER=gcc-13 \
+            -DCMAKE_CXX_COMPILER=g++-13 \
             -DCMAKE_INSTALL_PREFIX=${{ github.workspace }}/Build/lagom-tools \
             -Dpackage=LagomTools
 
diff --git a/Documentation/BuildInstructionsMacOS.md b/Documentation/BuildInstructionsMacOS.md
index e0545f0fca5..74d50dc07a3 100644
--- a/Documentation/BuildInstructionsMacOS.md
+++ b/Documentation/BuildInstructionsMacOS.md
@@ -30,9 +30,9 @@ brew install x86_64-elf-gdb
 If you have Xcode version 14.2 or older, also install a newer host compiler from homebrew. Xcode 14.3 is known to work.
 
 ```console
-brew install llvm@15
+brew install llvm@18
 # OR
-brew install gcc@12
+brew install gcc@13
 ```
 
 # Notes
diff --git a/Documentation/SelfHostedRunners.md b/Documentation/SelfHostedRunners.md
index d8ed616824e..98b4bd5701c 100644
--- a/Documentation/SelfHostedRunners.md
+++ b/Documentation/SelfHostedRunners.md
@@ -20,13 +20,13 @@ These instructions assume the OS installed is Ubuntu 22.04 (Jammy), so they migh
 ```shell
 sudo add-apt-repository ppa:canonical-server/server-backports
 wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-sudo add-apt-repository 'deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-15 main'
+sudo add-apt-repository 'deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-16 main'
 apt update
-apt install git build-essential make cmake clang-format-15 gcc-12 g++-12 libstdc++-12-dev libgmp-dev ccache libmpfr-dev libmpc-dev ninja-build e2fsprogs qemu-utils qemu-system-i386 wabt
+apt install git build-essential make cmake clang-format-16 gcc-13 g++-13 libstdc++-13-dev libgmp-dev ccache libmpfr-dev libmpc-dev ninja-build e2fsprogs qemu-utils qemu-system-i386 wabt
 ```
-### Force usage of GCC 12
+### Force usage of GCC 13
 ```shell
-update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-12 100 --slave /usr/bin/g++ g++ /usr/bin/g++-12
+update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-13 100 --slave /usr/bin/g++ g++ /usr/bin/g++-13
 ```
 ### Create a new user account named 'runner'
 ```shell
diff --git a/Documentation/Troubleshooting.md b/Documentation/Troubleshooting.md
index 477b8deb606..d02d6bf6fd4 100644
--- a/Documentation/Troubleshooting.md
+++ b/Documentation/Troubleshooting.md
@@ -43,9 +43,9 @@ If this happens, run `Meta/serenity.sh rebuild x86_64` to start over from a fres
 
 ### GCC is missing or is outdated
 
-Ensure your gcc version is >= 12 with `gcc --version`. Otherwise, install it. If your gcc binary is not
+Ensure your gcc version is >= 13 with `gcc --version`. Otherwise, install it. If your gcc binary is not
 called `gcc` you have to specify the names of your C and C++ compiler when you run cmake, e.g.
-`cmake ../.. -GNinja -DCMAKE_C_COMPILER=gcc-12 -DCMAKE_CXX_COMPILER=g++-12`.
+`cmake ../.. -GNinja -DCMAKE_C_COMPILER=gcc-13 -DCMAKE_CXX_COMPILER=g++-13`.
 
 ### Legacy renegotiation is disabled
 
diff --git a/Meta/Azure/Lagom.yml b/Meta/Azure/Lagom.yml
index 05dfbced6f8..dfdc09c1d37 100644
--- a/Meta/Azure/Lagom.yml
+++ b/Meta/Azure/Lagom.yml
@@ -25,15 +25,15 @@ jobs:
 
     - name: host-cc
       ${{ if eq(parameters.os, 'macOS') }}:
-        value: $(brew --prefix llvm@15)/bin/clang
+        value: $(brew --prefix llvm@18)/bin/clang
       ${{ if not(eq(parameters.os, 'macOS')) }}:
-        value: gcc-12
+        value: gcc-13
 
     - name: host-cxx
       ${{ if eq(parameters.os, 'macOS') }}:
-        value: $(brew --prefix llvm@15)/bin/clang++
+        value: $(brew --prefix llvm@18)/bin/clang++
       ${{ if not(eq(parameters.os, 'macOS')) }}:
-        value: g++-12
+        value: g++-13
 
     - name: ndk_version # only relevant for Android
       value: '25.2.9519653'
diff --git a/Meta/Azure/Serenity.yml b/Meta/Azure/Serenity.yml
index a4c62f1b1c4..893af59885a 100644
--- a/Meta/Azure/Serenity.yml
+++ b/Meta/Azure/Serenity.yml
@@ -52,8 +52,8 @@ jobs:
           -DDUMP_REGIONS_ON_CRASH=ON \
           -DENABLE_PCI_IDS_DOWNLOAD=OFF \
           -DENABLE_USB_IDS_DOWNLOAD=OFF \
-          -DCMAKE_C_COMPILER=gcc-12 \
-          -DCMAKE_CXX_COMPILER=g++-12
+          -DCMAKE_C_COMPILER=gcc-13 \
+          -DCMAKE_CXX_COMPILER=g++-13
       displayName: 'Create Build Environment'
       workingDirectory: $(Build.SourcesDirectory)
       env:
diff --git a/Meta/Azure/Setup.yml b/Meta/Azure/Setup.yml
index 341eccd66a0..6ef62934cec 100644
--- a/Meta/Azure/Setup.yml
+++ b/Meta/Azure/Setup.yml
@@ -11,22 +11,22 @@ steps:
         wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
         sudo add-apt-repository 'deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-16 main'
         sudo apt-get update
-        sudo apt-get install clang-format-16 ccache e2fsprogs gcc-12 g++-12 libstdc++-12-dev libmpfr-dev libmpc-dev ninja-build qemu-utils qemu-system-i386 unzip lld
+        sudo apt-get install clang-format-16 ccache e2fsprogs gcc-13 g++-13 libstdc++-13-dev libmpfr-dev libmpc-dev ninja-build qemu-utils qemu-system-i386 unzip lld
       displayName: 'Install Dependencies'
 
   - ${{ if eq(parameters.os, 'Linux') }}:
     - script: |
         set -e
-        sudo apt-get purge -y clang-12 clang-13 clang-14 gcc-10
+        sudo apt-get purge -y clang-13 clang-14 clang-15 gcc-10 gcc-11 gcc-12
         wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
-        sudo add-apt-repository 'deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-15 main'
+        sudo add-apt-repository 'deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-18 main'
         sudo apt-get update
-        sudo apt-get install ccache gcc-12 g++-12 clang-15 libstdc++-12-dev ninja-build unzip qt6-base-dev qt6-tools-dev-tools libqt6svg6-dev qt6-multimedia-dev libgl1-mesa-dev libpulse-dev libssl-dev libegl1-mesa-dev
+        sudo apt-get install ccache clang-18 clang++-18 lld-18 ninja-build unzip qt6-base-dev qt6-tools-dev-tools libqt6svg6-dev qt6-multimedia-dev libgl1-mesa-dev libpulse-dev libssl-dev libegl1-mesa-dev
 
-        sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-15 100
-        sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-15 100
-        sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-12 100
-        sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-12 100
+        sudo update-alternatives --install /usr/bin/clang clang /usr/bin/clang-18 100
+        sudo update-alternatives --install /usr/bin/clang++ clang++ /usr/bin/clang++-18 100
+        sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-13 100
+        sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-13 100
 
         wget https://github.com/WebAssembly/wabt/releases/download/1.0.23/wabt-1.0.23-ubuntu.tar.gz
         tar -xzf ./wabt-1.0.23-ubuntu.tar.gz
@@ -37,5 +37,5 @@ steps:
     # macOS ships an ancient Bash 3.x by default
     - script: |
         set -e
-        brew install coreutils bash ninja wabt ccache unzip qt llvm@15
+        brew install coreutils bash ninja wabt ccache unzip qt llvm@18
       displayName: 'Install Dependencies'
diff --git a/Meta/Lagom/BuildFuzzers.sh b/Meta/Lagom/BuildFuzzers.sh
index 7f46cd647c7..d31890f2eba 100755
--- a/Meta/Lagom/BuildFuzzers.sh
+++ b/Meta/Lagom/BuildFuzzers.sh
@@ -14,7 +14,7 @@ die() {
 
 pick_clang() {
     local BEST_VERSION=0
-    for CLANG_CANDIDATE in clang clang-15 clang-16 /opt/homebrew/opt/llvm/bin/clang ; do
+    for CLANG_CANDIDATE in clang clang-15 clang-16 clang-17 clang-18 /opt/homebrew/opt/llvm/bin/clang ; do
         if ! command -v $CLANG_CANDIDATE >/dev/null 2>&1; then
             continue
         fi
@@ -33,8 +33,8 @@ pick_clang() {
             BEST_CLANG_CANDIDATE="$CLANG_CANDIDATE"
         fi
     done
-    if [ "$BEST_VERSION" -lt 14 ]; then
-        die "Please make sure that Clang version 14 or higher is installed."
+    if [ "$BEST_VERSION" -lt 15 ]; then
+        die "Please make sure that Clang version 15 or higher is installed."
     fi
 }
 
diff --git a/Meta/find_compiler.sh b/Meta/find_compiler.sh
index ce52e6ec3a2..028f4f055ba 100644
--- a/Meta/find_compiler.sh
+++ b/Meta/find_compiler.sh
@@ -56,14 +56,14 @@ pick_host_compiler() {
         return
     fi
 
-    find_newest_compiler clang clang-15 clang-16 /opt/homebrew/opt/llvm/bin/clang
+    find_newest_compiler clang clang-15 clang-16 clang-17 clang-18 /opt/homebrew/opt/llvm/bin/clang
     if is_supported_compiler "$HOST_COMPILER"; then
         export CC="${HOST_COMPILER}"
         export CXX="${HOST_COMPILER/clang/clang++}"
         return
     fi
 
-    find_newest_compiler egcc gcc gcc-12 gcc-13 /usr/local/bin/gcc-{12,13} /opt/homebrew/bin/gcc-{12,13}
+    find_newest_compiler egcc gcc gcc-12 gcc-13 gcc-14 /usr/local/bin/gcc-{12,13,14} /opt/homebrew/bin/gcc-{12,13,14}
     if is_supported_compiler "$HOST_COMPILER"; then
         export CC="${HOST_COMPILER}"
         export CXX="${HOST_COMPILER/gcc/g++}"