diff --git a/contrib/utils/install-dependencies-bullseye.sh b/contrib/utils/install-dependencies-bullseye.sh
index 29b7281fa..2be4f5d6a 100755
--- a/contrib/utils/install-dependencies-bullseye.sh
+++ b/contrib/utils/install-dependencies-bullseye.sh
@@ -1,209 +1,212 @@
 #!/usr/bin/env bash
 
 export LC_ALL=C.UTF-8
 
 set -euxo pipefail
 
 dpkg --add-architecture i386
 
 PACKAGES=(
   arcanist
   automake
   autotools-dev
   binutils
   bison
   bsdmainutils
   build-essential
   ccache
   cmake
   curl
   default-jdk
   devscripts
   doxygen
   dput
   g++-9
   g++-9-aarch64-linux-gnu
   g++-9-arm-linux-gnueabihf
   g++-9-multilib
   g++-mingw-w64
   gcc-9
   gcc-9-aarch64-linux-gnu
   gcc-9-arm-linux-gnueabihf
   gcc-9-multilib
   gettext-base
   git
   golang
   gnupg
   graphviz
   gperf
   help2man
   jq
   lcov
   less
   lib32stdc++-10-dev
   libboost-dev
   libbz2-dev
   libc6-dev:i386
   libcap-dev
   libdb++-dev
   libdb-dev
   libevent-dev
   libjemalloc-dev
   libminiupnpc-dev
   libnatpmp-dev
   libprotobuf-dev
   libpcsclite-dev
   libqrencode-dev
   libqt5core5a
   libqt5dbus5
   libqt5gui5
   libsqlite3-dev
   libssl-dev
   libtinfo5
   libtool
   libzmq3-dev
   lld
   make
   ninja-build
   nsis
   pandoc
   php-codesniffer
   pkg-config
   protobuf-compiler
   python3
   python3-pip
   python3-setuptools
   python3-yaml
   python3-zmq
   qttools5-dev
   qttools5-dev-tools
   shellcheck
   software-properties-common
   swig
   tar
   wget
   xorriso
   xvfb
   yamllint
 )
 
 function join_by() {
   local IFS="$1"
   shift
   echo "$*"
 }
 
 apt-get update
 DEBIAN_FRONTEND=noninteractive apt-get install -y $(join_by ' ' "${PACKAGES[@]}")
 
 BACKPORTS=(
   git-filter-repo
   qemu-user-static
 )
 
 echo "deb http://deb.debian.org/debian bullseye-backports main" | tee -a /etc/apt/sources.list
 apt-get update
 DEBIAN_FRONTEND=noninteractive apt-get -t bullseye-backports install -y $(join_by ' ' "${BACKPORTS[@]}")
 
 # Install llvm and clang
 apt-key add "$(dirname "$0")"/llvm.pub
 add-apt-repository "deb https://apt.llvm.org/bullseye/   llvm-toolchain-bullseye-12 main"
 apt-get update
 
 LLVM_PACKAGES=(
   clang-12
   clang-format-12
   clang-tidy-12
   clang-tools-12
 )
 DEBIAN_FRONTEND=noninteractive apt-get install -y $(join_by ' ' "${LLVM_PACKAGES[@]}")
 
 # Make sure our specific llvm and clang versions have highest priority
 update-alternatives --install /usr/bin/clang clang "$(command -v clang-12)" 100
 update-alternatives --install /usr/bin/clang++ clang++ "$(command -v clang++-12)" 100
 update-alternatives --install /usr/bin/llvm-symbolizer llvm-symbolizer "$(command -v llvm-symbolizer-12)" 100
 
 # Use gcc-9/g++-9 by default so it uses libstdc++-9. This prevents from pulling
 # the new pthread_cond_clockwait symbol from GLIBC_30 and ensure we are testing
 # under the same condition our release it built.
 update-alternatives --install /usr/bin/gcc gcc "$(command -v gcc-9)" 100
 update-alternatives --install /usr/bin/g++ g++ "$(command -v g++-9)" 100
 
 update-alternatives --install /usr/bin/aarch64-linux-gnu-gcc aarch64-linux-gnu-gcc "$(command -v aarch64-linux-gnu-gcc-9)" 100
 update-alternatives --install /usr/bin/aarch64-linux-gnu-g++ aarch64-linux-gnu-g++ "$(command -v aarch64-linux-gnu-g++-9)" 100
 
 update-alternatives --install /usr/bin/arm-linux-gnueabihf-gcc arm-linux-gnueabihf-gcc "$(command -v arm-linux-gnueabihf-gcc-9)" 100
 update-alternatives --install /usr/bin/arm-linux-gnueabihf-g++ arm-linux-gnueabihf-g++ "$(command -v arm-linux-gnueabihf-g++-9)" 100
 
 # Use the mingw posix variant
 update-alternatives --set x86_64-w64-mingw32-g++ $(command -v x86_64-w64-mingw32-g++-posix)
 update-alternatives --set x86_64-w64-mingw32-gcc $(command -v x86_64-w64-mingw32-gcc-posix)
 
 # Python library for merging nested structures
 pip3 install deepmerge
 # For running Python test suites
 pip3 install pytest
 # For en/-decoding protobuf messages
 # This version is compatible with Debian's "protobuf-compiler" package
 pip3 install "protobuf<=3.20"
 # For security-check.py and symbol-check.py
 pip3 install "lief==0.13.2"
 # For Chronik WebSocket endpoint
 pip3 install websocket-client
 
 # Required python linters
 pip3 install black==23.3.0 isort==5.6.4 mypy==0.910 flynt==0.78 flake8==6.0.0
 echo "export PATH=\"$(python3 -m site --user-base)/bin:\$PATH\"" >> ~/.bashrc
 # shellcheck source=/dev/null
 source ~/.bashrc
 
 # Install npm v10.x and nodejs v20.x
 wget https://deb.nodesource.com/setup_20.x -O nodesetup.sh
 echo "f8fb478685fb916cc70858200595a4f087304bcde1e69aa713bf2eb41695afc1 nodesetup.sh" | sha256sum -c
 chmod +x nodesetup.sh
 ./nodesetup.sh
 apt-get install -y nodejs
 
 # Install nyc for mocha unit test reporting
 npm i -g nyc
 
 # Install Rust stable 1.72.0 and nightly from the 2023-12-29
-curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain=1.72.0
+curl -sSf https://static.rust-lang.org/rustup/archive/1.26.0/x86_64-unknown-linux-gnu/rustup-init -o rustup-init
+echo "0b2f6c8f85a3d02fde2efc0ced4657869d73fccfce59defb4e8d29233116e6db rustup-init" | sha256sum -c
+chmod +x rustup-init
+./rustup-init -y --default-toolchain=1.72.0
 RUST_HOME="${HOME}/.cargo/bin"
 RUST_NIGHTLY_DATE=2023-12-29
 "${RUST_HOME}/rustup" install nightly-${RUST_NIGHTLY_DATE}
 "${RUST_HOME}/rustup" component add rustfmt --toolchain nightly-${RUST_NIGHTLY_DATE}
 # Name the nightly toolchain "abc-nightly"
 "${RUST_HOME}/rustup" toolchain link abc-nightly "$(${RUST_HOME}/rustc +nightly-${RUST_NIGHTLY_DATE} --print sysroot)"
 
 # Install required compile platform targets on stable
 "${RUST_HOME}/rustup" target add "i686-unknown-linux-gnu" \
                                  "x86_64-unknown-linux-gnu" \
                                  "aarch64-unknown-linux-gnu" \
                                  "arm-unknown-linux-gnueabihf" \
                                  "x86_64-apple-darwin" \
                                  "x86_64-pc-windows-gnu"
 
 # Install Electrum ABC test dependencies
 here=$(dirname -- "$(readlink -f -- "${BASH_SOURCE[0]}")")
 pip3 install -r "${here}/../../electrum/contrib/requirements/requirements.txt"
 pip3 install -r "${here}/../../electrum/contrib/requirements/requirements-regtest.txt"
 pip3 install -r "${here}/../../electrum/contrib/requirements/requirements-hw.txt"
 
 # Install the winehq-staging version of wine that doesn't suffer from the memory
 # limitations of the previous versions. Installation instructions are from
 # https://wiki.winehq.org/Debian
 mkdir -p /etc/apt/keyrings
 wget -O /etc/apt/keyrings/winehq-archive.key https://dl.winehq.org/wine-builds/winehq.key
 wget -NP /etc/apt/sources.list.d/ https://dl.winehq.org/wine-builds/debian/dists/bullseye/winehq-bullseye.sources
 apt-get update
 WINE_VERSION=8.19~bullseye-1
 # We need all the packages and dependencies to use a pinpointed vesion
 WINE_PACKAGES=(
   winehq-staging
   wine-staging
   wine-staging-amd64
   wine-staging-i386
 )
 # Pinpoint the version so we get consistent results on CI
 DEBIAN_FRONTEND=noninteractive apt-get install -y $(join_by ' ' "${WINE_PACKAGES[@]/%/=${WINE_VERSION}}")