diff --git a/.devcontainer/features/ladybird/install-fedora.sh b/.devcontainer/features/ladybird/install-fedora.sh
index 74ab2503dd4..fa3f3423e0a 100644
--- a/.devcontainer/features/ladybird/install-fedora.sh
+++ b/.devcontainer/features/ladybird/install-fedora.sh
@@ -5,7 +5,7 @@ set -e
 dnf install -y git gh
 
 # Ladybird dev dependencies
-dnf install -y autoconf-archive automake ccache cmake curl google-noto-sans-mono-fonts liberation-sans-fonts \
+dnf install -y autoconf-archive automake bison ccache cmake curl google-noto-sans-mono-fonts liberation-sans-fonts \
     libglvnd-devel libtool nasm ninja-build patchelf perl-FindBin perl-IPC-Cmd perl-lib qt6-qtbase-devel \
     qt6-qttools-devel qt6-qtwayland-devel tar unzip zip zlib-ng-compat-static
 
diff --git a/.devcontainer/features/ladybird/install-ubuntu.sh b/.devcontainer/features/ladybird/install-ubuntu.sh
index 70820b05a68..bf05dfc85c9 100644
--- a/.devcontainer/features/ladybird/install-ubuntu.sh
+++ b/.devcontainer/features/ladybird/install-ubuntu.sh
@@ -24,7 +24,7 @@ install_llvm_key() {
 ### Install packages
 
 apt update -y
-apt install -y lsb-release git python3 autoconf autoconf-archive automake build-essential cmake libdrm-dev libgl1-mesa-dev libtool nasm ninja-build pkg-config qt6-base-dev qt6-tools-dev-tools qt6-wayland ccache fonts-liberation2 zip unzip curl tar
+apt install -y lsb-release git python3 autoconf autoconf-archive automake bison build-essential cmake libdrm-dev libgl1-mesa-dev libtool libxkbcommon-dev nasm ninja-build pkg-config qt6-base-dev qt6-tools-dev-tools qt6-wayland ccache fonts-liberation2 zip unzip curl tar
 
 ### Install Rust toolchain
 curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
diff --git a/.github/actions/setup/action.yml b/.github/actions/setup/action.yml
index 70b3ade5109..7e07033e93e 100644
--- a/.github/actions/setup/action.yml
+++ b/.github/actions/setup/action.yml
@@ -80,6 +80,7 @@ runs:
             autoconf \
             autoconf-archive \
             automake \
+            bison \
             build-essential \
             ccache \
             cmake \
@@ -95,6 +96,7 @@ runs:
             libssl-dev \
             libstdc++-${{ inputs.gcc_version }}-dev \
             libtool \
+            libxkbcommon-dev \
             lld-${{ inputs.llvm_version }} \
             llvm-${{ inputs.llvm_version }} \
             nasm \