diff --git a/contrib/gitian-descriptors/gitian-linux.yml b/contrib/gitian-descriptors/gitian-linux.yml
index c06d5b9502..6bda3b3a7e 100644
--- a/contrib/gitian-descriptors/gitian-linux.yml
+++ b/contrib/gitian-descriptors/gitian-linux.yml
@@ -1,192 +1,188 @@
 ---
 name: "bitcoin-abc-0.18-linux"
 enable_cache: true
+distro: "debian"
 suites:
-- "xenial"
+- "stretch"
 architectures:
 - "amd64"
 multiarch:
 - "i386"
 packages:
 - "curl"
 - "gperf"
 - "g++-aarch64-linux-gnu"
-- "g++-5-aarch64-linux-gnu"
 - "gcc-aarch64-linux-gnu"
-- "gcc-5-aarch64-linux-gnu"
 - "binutils-aarch64-linux-gnu"
 - "g++-arm-linux-gnueabihf"
-- "g++-5-arm-linux-gnueabihf"
 - "gcc-arm-linux-gnueabihf"
-- "gcc-5-arm-linux-gnueabihf"
 - "binutils-arm-linux-gnueabihf"
-- "g++-5-multilib"
-- "gcc-5-multilib"
 - "binutils-gold"
-- "git-core"
+- "build-essential"
+- "git"
 - "pkg-config"
 - "autoconf"
 - "libtool"
 - "automake"
 - "faketime"
 - "bsdmainutils"
 - "ca-certificates"
 - "python"
+- "lib32stdc++-6-dev"
 - "libc6-dev:i386"
-- "libstdc++6:i386"
 remotes:
 - "url": "https://github.com/Bitcoin-ABC/bitcoin-abc.git"
   "dir": "bitcoin"
 files: []
 script: |
 
   WRAP_DIR=$HOME/wrapped
   HOSTS="i686-pc-linux-gnu x86_64-linux-gnu arm-linux-gnueabihf aarch64-linux-gnu"
   CONFIGFLAGS="--enable-glibc-back-compat --enable-reduce-exports --disable-bench --disable-gui-tests"
   FAKETIME_HOST_PROGS=""
   FAKETIME_PROGS="date ar ranlib nm"
   HOST_CFLAGS="-O2 -g"
   HOST_CXXFLAGS="-O2 -g"
   HOST_LDFLAGS=-static-libstdc++
 
   export QT_RCC_TEST=1
   export QT_RCC_SOURCE_DATE_OVERRIDE=1
   export GZIP="-9n"
   export TAR_OPTIONS="--mtime="$REFERENCE_DATE\\\ $REFERENCE_TIME""
   export TZ="UTC"
   export BUILD_DIR=`pwd`
   mkdir -p ${WRAP_DIR}
   if test -n "$GBUILD_CACHE_ENABLED"; then
     export SOURCES_PATH=${GBUILD_COMMON_CACHE}
     export BASE_CACHE=${GBUILD_PACKAGE_CACHE}
     mkdir -p ${BASE_CACHE} ${SOURCES_PATH}
   fi
 
   function create_global_faketime_wrappers {
   for prog in ${FAKETIME_PROGS}; do
     echo '#!/bin/bash' > ${WRAP_DIR}/${prog}
     echo "REAL=\`which -a ${prog} | grep -v ${WRAP_DIR}/${prog} | head -1\`" >> ${WRAP_DIR}/${prog}
     echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${prog}
     echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${prog}
     echo "\$REAL \$@" >> $WRAP_DIR/${prog}
     chmod +x ${WRAP_DIR}/${prog}
   done
   }
 
   function create_per-host_faketime_wrappers {
   for i in $HOSTS; do
     for prog in ${FAKETIME_HOST_PROGS}; do
         echo '#!/bin/bash' > ${WRAP_DIR}/${i}-${prog}
         echo "REAL=\`which -a ${i}-${prog} | grep -v ${WRAP_DIR}/${i}-${prog} | head -1\`" >> ${WRAP_DIR}/${i}-${prog}
         echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${i}-${prog}
         echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${i}-${prog}
         echo "\$REAL \$@" >> $WRAP_DIR/${i}-${prog}
         chmod +x ${WRAP_DIR}/${i}-${prog}
     done
   done
   }
 
   # Faketime for depends so intermediate results are comparable
   export PATH_orig=${PATH}
   create_global_faketime_wrappers "2000-01-01 12:00:00"
   create_per-host_faketime_wrappers "2000-01-01 12:00:00"
   export PATH=${WRAP_DIR}:${PATH}
 
   EXTRA_INCLUDES_BASE=$WRAP_DIR/extra_includes
   mkdir -p $EXTRA_INCLUDES_BASE
 
   # x86 needs /usr/include/i386-linux-gnu/asm pointed to /usr/include/x86_64-linux-gnu/asm,
   # but we can't write there. Instead, create a link here and force it to be included in the
   # search paths by wrapping gcc/g++.
 
   mkdir -p $EXTRA_INCLUDES_BASE/i686-pc-linux-gnu
   rm -f $WRAP_DIR/extra_includes/i686-pc-linux-gnu/asm
   ln -s /usr/include/x86_64-linux-gnu/asm $EXTRA_INCLUDES_BASE/i686-pc-linux-gnu/asm
 
   for prog in gcc g++; do
   rm -f ${WRAP_DIR}/${prog}
   cat << EOF > ${WRAP_DIR}/${prog}
   #!/bin/bash
   REAL="`which -a ${prog} | grep -v ${WRAP_DIR}/${prog} | head -1`"
   for var in "\$@"
   do
     if [ "\$var" = "-m32" ]; then
       export C_INCLUDE_PATH="$EXTRA_INCLUDES_BASE/i686-pc-linux-gnu"
       export CPLUS_INCLUDE_PATH="$EXTRA_INCLUDES_BASE/i686-pc-linux-gnu"
       break
     fi
   done
   \$REAL \$@
   EOF
   chmod +x ${WRAP_DIR}/${prog}
   done
 
   cd bitcoin
   BASEPREFIX=`pwd`/depends
   # Build dependencies for each host
   for i in $HOSTS; do
     EXTRA_INCLUDES="$EXTRA_INCLUDES_BASE/$i"
     if [ -d "$EXTRA_INCLUDES" ]; then
       export HOST_ID_SALT="$EXTRA_INCLUDES"
     fi
     make ${MAKEOPTS} -C ${BASEPREFIX} HOST="${i}"
     unset HOST_ID_SALT
   done
 
   # Faketime for binaries
   export PATH=${PATH_orig}
   create_global_faketime_wrappers "${REFERENCE_DATETIME}"
   create_per-host_faketime_wrappers "${REFERENCE_DATETIME}"
   export PATH=${WRAP_DIR}:${PATH}
 
   # Create the release tarball using (arbitrarily) the first host
   ./autogen.sh
   CONFIG_SITE=${BASEPREFIX}/`echo "${HOSTS}" | awk '{print $1;}'`/share/config.site ./configure --prefix=/
   make dist
   SOURCEDIST=`echo bitcoin-abc-*.tar.gz`
   DISTNAME=`echo ${SOURCEDIST} | sed 's/.tar.*//'`
   # Correct tar file order
   mkdir -p temp
   pushd temp
   tar xf ../$SOURCEDIST
   find bitcoin-abc-* | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ../$SOURCEDIST
   popd
 
   ORIGPATH="$PATH"
   # Extract the release tarball into a dir for each host and build
   for i in ${HOSTS}; do
     export PATH=${BASEPREFIX}/${i}/native/bin:${ORIGPATH}
     mkdir -p distsrc-${i}
     cd distsrc-${i}
     INSTALLPATH=`pwd`/installed/${DISTNAME}
     mkdir -p ${INSTALLPATH}
     tar --strip-components=1 -xf ../$SOURCEDIST
 
     CONFIG_SITE=${BASEPREFIX}/${i}/share/config.site ./configure --prefix=/ --disable-ccache --disable-maintainer-mode --disable-dependency-tracking ${CONFIGFLAGS} CFLAGS="${HOST_CFLAGS}" CXXFLAGS="${HOST_CXXFLAGS}" LDFLAGS="${HOST_LDFLAGS}"
     make ${MAKEOPTS}
     make ${MAKEOPTS} -C src check-security
 
     #TODO: This is a quick hack that disables symbol checking for arm.
     #      Instead, we should investigate why these are popping up.
     #      For aarch64, we'll need to bump up the min GLIBC version, as the abi
     #      support wasn't introduced until 2.17.
     case $i in
        aarch64-*) : ;;
        arm-*) : ;;
        *) make ${MAKEOPTS} -C src check-symbols ;;
     esac
 
     make install DESTDIR=${INSTALLPATH}
     cd installed
     find . -name "lib*.la" -delete
     find . -name "lib*.a" -delete
     rm -rf ${DISTNAME}/lib/pkgconfig
     find ${DISTNAME}/bin -type f -executable -exec ../contrib/devtools/split-debug.sh {} {} {}.dbg \;
     find ${DISTNAME}/lib -type f -exec ../contrib/devtools/split-debug.sh {} {} {}.dbg \;
     find ${DISTNAME} -not -name "*.dbg" | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ${OUTDIR}/${DISTNAME}-${i}.tar.gz
     find ${DISTNAME} -name "*.dbg" | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ${OUTDIR}/${DISTNAME}-${i}-debug.tar.gz
     cd ../../
     rm -rf distsrc-${i}
   done
   mkdir -p $OUTDIR/src
   mv $SOURCEDIST $OUTDIR/src
diff --git a/contrib/gitian-descriptors/gitian-osx-signer.yml b/contrib/gitian-descriptors/gitian-osx-signer.yml
index b5fe8222af..feb616f385 100644
--- a/contrib/gitian-descriptors/gitian-osx-signer.yml
+++ b/contrib/gitian-descriptors/gitian-osx-signer.yml
@@ -1,37 +1,38 @@
 ---
 name: "bitcoin-dmg-signer"
+distro: "debian"
 suites:
-- "xenial"
+- "stretch"
 architectures:
 - "amd64"
 packages:
 - "faketime"
 remotes:
 - "url": "https://github.com/bitcoin-core/bitcoin-detached-sigs.git"
   "dir": "signature"
 files:
 - "bitcoin-osx-unsigned.tar.gz"
 script: |
   WRAP_DIR=$HOME/wrapped
   mkdir -p ${WRAP_DIR}
   export PATH=`pwd`:$PATH
   FAKETIME_PROGS="dmg genisoimage"
 
   # Create global faketime wrappers
   for prog in ${FAKETIME_PROGS}; do
     echo '#!/bin/bash' > ${WRAP_DIR}/${prog}
     echo "REAL=\`which -a ${prog} | grep -v ${WRAP_DIR}/${prog} | head -1\`" >> ${WRAP_DIR}/${prog}
     echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${prog}
     echo "export FAKETIME=\"${REFERENCE_DATETIME}\"" >> ${WRAP_DIR}/${prog}
     echo "\$REAL \$@" >> $WRAP_DIR/${prog}
     chmod +x ${WRAP_DIR}/${prog}
   done
 
   UNSIGNED=bitcoin-osx-unsigned.tar.gz
   SIGNED=bitcoin-osx-signed.dmg
 
   tar -xf ${UNSIGNED}
   OSX_VOLNAME="$(cat osx_volname)"
   ./detached-sig-apply.sh ${UNSIGNED} signature/osx
   ${WRAP_DIR}/genisoimage -no-cache-inodes -D -l -probe -V "${OSX_VOLNAME}" -no-pad -r -dir-mode 0755 -apple -o uncompressed.dmg signed-app
   ${WRAP_DIR}/dmg dmg uncompressed.dmg ${OUTDIR}/${SIGNED}
diff --git a/contrib/gitian-descriptors/gitian-osx.yml b/contrib/gitian-descriptors/gitian-osx.yml
index 6a67b6d2b9..fd4a483cd5 100644
--- a/contrib/gitian-descriptors/gitian-osx.yml
+++ b/contrib/gitian-descriptors/gitian-osx.yml
@@ -1,160 +1,161 @@
 ---
 name: "bitcoin-abc-0.18-osx"
 enable_cache: true
+distro: "debian"
 suites:
-- "xenial"
+- "stretch"
 architectures:
 - "amd64"
 packages:
 - "ca-certificates"
 - "curl"
 - "g++"
-- "git-core"
+- "git"
 - "pkg-config"
 - "autoconf"
 - "librsvg2-bin"
 - "libtiff-tools"
 - "libtool"
 - "automake"
 - "faketime"
 - "bsdmainutils"
 - "cmake"
 - "ninja-build"
 - "imagemagick"
 - "libcap-dev"
 - "libz-dev"
 - "libbz2-dev"
 - "python"
 - "python-dev"
 - "python-setuptools"
 - "fonts-tuffy"
 remotes:
 - "url": "https://github.com/Bitcoin-ABC/bitcoin-abc.git"
   "dir": "bitcoin"
 files:
 - "MacOSX10.11.sdk.tar.gz"
 script: |
   WRAP_DIR=$HOME/wrapped
   HOSTS="x86_64-apple-darwin11"
   CONFIGFLAGS="--enable-reduce-exports --disable-bench --disable-gui-tests GENISOIMAGE=$WRAP_DIR/genisoimage"
   FAKETIME_HOST_PROGS=""
   FAKETIME_PROGS="ar ranlib date dmg genisoimage"
 
   export QT_RCC_TEST=1
   export QT_RCC_SOURCE_DATE_OVERRIDE=1
   export GZIP="-9n"
   export TAR_OPTIONS="--mtime="$REFERENCE_DATE\\\ $REFERENCE_TIME""
   export TZ="UTC"
   export BUILD_DIR=`pwd`
   mkdir -p ${WRAP_DIR}
   if test -n "$GBUILD_CACHE_ENABLED"; then
     export SOURCES_PATH=${GBUILD_COMMON_CACHE}
     export BASE_CACHE=${GBUILD_PACKAGE_CACHE}
     mkdir -p ${BASE_CACHE} ${SOURCES_PATH}
   fi
 
   export ZERO_AR_DATE=1
 
   function create_global_faketime_wrappers {
   for prog in ${FAKETIME_PROGS}; do
     echo '#!/bin/bash' > ${WRAP_DIR}/${prog}
     echo "REAL=\`which -a ${prog} | grep -v ${WRAP_DIR}/${prog} | head -1\`" >> ${WRAP_DIR}/${prog}
     echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${prog}
     echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${prog}
     echo "\$REAL \$@" >> $WRAP_DIR/${prog}
     chmod +x ${WRAP_DIR}/${prog}
   done
   }
 
   function create_per-host_faketime_wrappers {
   for i in $HOSTS; do
     for prog in ${FAKETIME_HOST_PROGS}; do
         echo '#!/bin/bash' > ${WRAP_DIR}/${i}-${prog}
         echo "REAL=\`which -a ${i}-${prog} | grep -v ${WRAP_DIR}/${i}-${prog} | head -1\`" >> ${WRAP_DIR}/${i}-${prog}
         echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${i}-${prog}
         echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${i}-${prog}
         echo "\$REAL \$@" >> $WRAP_DIR/${i}-${prog}
         chmod +x ${WRAP_DIR}/${i}-${prog}
     done
   done
   }
 
   # Faketime for depends so intermediate results are comparable
   export PATH_orig=${PATH}
   create_global_faketime_wrappers "2000-01-01 12:00:00"
   create_per-host_faketime_wrappers "2000-01-01 12:00:00"
   export PATH=${WRAP_DIR}:${PATH}
 
   cd bitcoin
   BASEPREFIX=`pwd`/depends
 
   mkdir -p ${BASEPREFIX}/SDKs
   tar -C ${BASEPREFIX}/SDKs -xf ${BUILD_DIR}/MacOSX10.11.sdk.tar.gz
 
   # Build dependencies for each host
   for i in $HOSTS; do
     make ${MAKEOPTS} -C ${BASEPREFIX} HOST="${i}"
   done
 
   # Faketime for binaries
   export PATH=${PATH_orig}
   create_global_faketime_wrappers "${REFERENCE_DATETIME}"
   create_per-host_faketime_wrappers "${REFERENCE_DATETIME}"
   export PATH=${WRAP_DIR}:${PATH}
 
   # Create the release tarball using (arbitrarily) the first host
   ./autogen.sh
   CONFIG_SITE=${BASEPREFIX}/`echo "${HOSTS}" | awk '{print $1;}'`/share/config.site ./configure --prefix=/
   make dist
   SOURCEDIST=`echo bitcoin-abc-*.tar.gz`
   DISTNAME=`echo ${SOURCEDIST} | sed 's/.tar.*//'`
 
   # Correct tar file order
   mkdir -p temp
   pushd temp
   tar xf ../$SOURCEDIST
   find bitcoin-abc-* | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ../$SOURCEDIST
   popd
 
   ORIGPATH="$PATH"
   # Extract the release tarball into a dir for each host and build
   for i in ${HOSTS}; do
     export PATH=${BASEPREFIX}/${i}/native/bin:${ORIGPATH}
     mkdir -p distsrc-${i}
     cd distsrc-${i}
     INSTALLPATH=`pwd`/installed/${DISTNAME}
     mkdir -p ${INSTALLPATH}
     tar --strip-components=1 -xf ../$SOURCEDIST
 
     CONFIG_SITE=${BASEPREFIX}/${i}/share/config.site ./configure --prefix=/ --disable-ccache --disable-maintainer-mode --disable-dependency-tracking ${CONFIGFLAGS}
     make ${MAKEOPTS}
     make install-strip DESTDIR=${INSTALLPATH}
 
     make osx_volname
     make deploydir
     OSX_VOLNAME="$(cat osx_volname)"
     mkdir -p unsigned-app-${i}
     cp osx_volname unsigned-app-${i}/
     cp contrib/macdeploy/detached-sig-apply.sh unsigned-app-${i}
     cp contrib/macdeploy/detached-sig-create.sh unsigned-app-${i}
     cp ${BASEPREFIX}/${i}/native/bin/dmg ${BASEPREFIX}/${i}/native/bin/genisoimage unsigned-app-${i}
     cp ${BASEPREFIX}/${i}/native/bin/${i}-codesign_allocate unsigned-app-${i}/codesign_allocate
     cp ${BASEPREFIX}/${i}/native/bin/${i}-pagestuff unsigned-app-${i}/pagestuff
     mv dist unsigned-app-${i}
     pushd unsigned-app-${i}
     find . | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ${OUTDIR}/${DISTNAME}-osx-unsigned.tar.gz
     popd
 
     make deploy
     ${WRAP_DIR}/dmg dmg "${OSX_VOLNAME}.dmg" ${OUTDIR}/${DISTNAME}-osx-unsigned.dmg
 
     cd installed
     find . -name "lib*.la" -delete
     find . -name "lib*.a" -delete
     rm -rf ${DISTNAME}/lib/pkgconfig
     find ${DISTNAME} | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ${OUTDIR}/${DISTNAME}-${i}.tar.gz
     cd ../../
   done
   mkdir -p $OUTDIR/src
   mv $SOURCEDIST $OUTDIR/src
   mv ${OUTDIR}/${DISTNAME}-x86_64-*.tar.gz ${OUTDIR}/${DISTNAME}-osx64.tar.gz
diff --git a/contrib/gitian-descriptors/gitian-win-signer.yml b/contrib/gitian-descriptors/gitian-win-signer.yml
index 30a661e6b0..afdb13c494 100644
--- a/contrib/gitian-descriptors/gitian-win-signer.yml
+++ b/contrib/gitian-descriptors/gitian-win-signer.yml
@@ -1,38 +1,39 @@
 ---
 name: "bitcoin-win-signer"
+distro: "debian"
 suites:
-- "xenial"
+- "stretch"
 architectures:
 - "amd64"
 packages:
 - "libssl-dev"
 - "autoconf"
 remotes:
 - "url": "https://github.com/bitcoin-core/bitcoin-detached-sigs.git"
   "dir": "signature"
 files:
 - "osslsigncode-1.7.1.tar.gz"
 - "osslsigncode-Backports-to-1.7.1.patch"
 - "bitcoin-win-unsigned.tar.gz"
 script: |
   BUILD_DIR=`pwd`
   SIGDIR=${BUILD_DIR}/signature/win
   UNSIGNED_DIR=${BUILD_DIR}/unsigned
 
   echo "f9a8cdb38b9c309326764ebc937cba1523a3a751a7ab05df3ecc99d18ae466c9  osslsigncode-1.7.1.tar.gz" | sha256sum -c
   echo "a8c4e9cafba922f89de0df1f2152e7be286aba73f78505169bc351a7938dd911  osslsigncode-Backports-to-1.7.1.patch" | sha256sum -c
 
   mkdir -p ${UNSIGNED_DIR}
   tar -C ${UNSIGNED_DIR} -xf bitcoin-win-unsigned.tar.gz
 
   tar xf osslsigncode-1.7.1.tar.gz
   cd osslsigncode-1.7.1
   patch -p1 < ${BUILD_DIR}/osslsigncode-Backports-to-1.7.1.patch
 
   ./configure --without-gsf --without-curl --disable-dependency-tracking
   make
   find ${UNSIGNED_DIR} -name "*-unsigned.exe" | while read i; do
     INFILE="`basename "${i}"`"
     OUTFILE="`echo "${INFILE}" | sed s/-unsigned//`"
     ./osslsigncode attach-signature -in "${i}" -out "${OUTDIR}/${OUTFILE}" -sigin "${SIGDIR}/${INFILE}.pem"
   done
diff --git a/contrib/gitian-descriptors/gitian-win.yml b/contrib/gitian-descriptors/gitian-win.yml
index 0449e56637..e2d34e1222 100644
--- a/contrib/gitian-descriptors/gitian-win.yml
+++ b/contrib/gitian-descriptors/gitian-win.yml
@@ -1,178 +1,171 @@
 ---
 name: "bitcoin-abc-0.18-win"
 enable_cache: true
+distro: "debian"
 suites:
-- "xenial"
+- "stretch"
 architectures:
 - "amd64"
 packages:
 - "curl"
 - "g++"
-- "git-core"
+- "git"
 - "pkg-config"
 - "autoconf"
 - "libtool"
 - "automake"
 - "faketime"
 - "bsdmainutils"
 - "mingw-w64"
 - "g++-mingw-w64"
 - "nsis"
 - "zip"
 - "ca-certificates"
 - "python"
-alternatives:
-- "package" : "i686-w64-mingw32-gcc"
-  "path" : "/usr/bin/i686-w64-mingw32-gcc-posix"
-- "package" : "i686-w64-mingw32-g++"
-  "path" : "/usr/bin/i686-w64-mingw32-g++-posix"
-- "package" : "x86_64-w64-mingw32-gcc"
-  "path" : "/usr/bin/x86_64-w64-mingw32-gcc-posix"
-- "package" : "x86_64-w64-mingw32-g++"
-  "path" : "/usr/bin/x86_64-w64-mingw32-g++-posix"
+- "rename"
 remotes:
 - "url": "https://github.com/Bitcoin-ABC/bitcoin-abc.git"
   "dir": "bitcoin"
 files: []
 script: |
   WRAP_DIR=$HOME/wrapped
-  HOSTS="x86_64-w64-mingw32 i686-w64-mingw32"
+  HOSTS="i686-w64-mingw32 x86_64-w64-mingw32"
   CONFIGFLAGS="--enable-reduce-exports --disable-bench --disable-gui-tests --without-seeder"
-  FAKETIME_HOST_PROGS="g++ ar ranlib nm windres strip objcopy"
+  FAKETIME_HOST_PROGS="ar ranlib nm windres strip objcopy"
   FAKETIME_PROGS="date makensis zip"
   HOST_CFLAGS="-O2 -g"
   HOST_CXXFLAGS="-O2 -g"
 
   export QT_RCC_TEST=1
   export QT_RCC_SOURCE_DATE_OVERRIDE=1
   export GZIP="-9n"
   export TAR_OPTIONS="--mtime="$REFERENCE_DATE\\\ $REFERENCE_TIME""
   export TZ="UTC"
   export BUILD_DIR=`pwd`
   mkdir -p ${WRAP_DIR}
   if test -n "$GBUILD_CACHE_ENABLED"; then
     export SOURCES_PATH=${GBUILD_COMMON_CACHE}
     export BASE_CACHE=${GBUILD_PACKAGE_CACHE}
     mkdir -p ${BASE_CACHE} ${SOURCES_PATH}
   fi
 
   function create_global_faketime_wrappers {
   for prog in ${FAKETIME_PROGS}; do
     echo '#!/bin/bash' > ${WRAP_DIR}/${prog}
     echo "REAL=\`which -a ${prog} | grep -v ${WRAP_DIR}/${prog} | head -1\`" >> ${WRAP_DIR}/${prog}
     echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${prog}
     echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${prog}
     echo "\$REAL \$@" >> $WRAP_DIR/${prog}
     chmod +x ${WRAP_DIR}/${prog}
   done
   }
 
   function create_per-host_faketime_wrappers {
   for i in $HOSTS; do
     for prog in ${FAKETIME_HOST_PROGS}; do
         echo '#!/bin/bash' > ${WRAP_DIR}/${i}-${prog}
         echo "REAL=\`which -a ${i}-${prog} | grep -v ${WRAP_DIR}/${i}-${prog} | head -1\`" >> ${WRAP_DIR}/${i}-${prog}
         echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${i}-${prog}
         echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${i}-${prog}
         echo "\$REAL \$@" >> $WRAP_DIR/${i}-${prog}
         chmod +x ${WRAP_DIR}/${i}-${prog}
     done
   done
   }
 
   function create_per-host_linker_wrapper {
   # This is only needed for trusty, as the mingw linker leaks a few bytes of
   # heap, causing non-determinism. See discussion in https://github.com/bitcoin/bitcoin/pull/6900
   for i in $HOSTS; do
     mkdir -p ${WRAP_DIR}/${i}
     for prog in collect2; do
         echo '#!/bin/bash' > ${WRAP_DIR}/${i}/${prog}
         REAL=$(${i}-gcc -print-prog-name=${prog})
         echo "export MALLOC_PERTURB_=255" >> ${WRAP_DIR}/${i}/${prog}
         echo "${REAL} \$@" >> $WRAP_DIR/${i}/${prog}
         chmod +x ${WRAP_DIR}/${i}/${prog}
     done
     for prog in gcc g++; do
-        echo '#!/bin/bash' > ${WRAP_DIR}/${i}-${prog}
-        echo "REAL=\`which -a ${i}-${prog} | grep -v ${WRAP_DIR}/${i}-${prog} | head -1\`" >> ${WRAP_DIR}/${i}-${prog}
+        echo '#!/usr/bin/env bash' > ${WRAP_DIR}/${i}-${prog}
+        echo "REAL=\`which -a ${i}-${prog}-posix | grep -v ${WRAP_DIR}/${i}-${prog} | head -1\`" >> ${WRAP_DIR}/${i}-${prog}
         echo 'export LD_PRELOAD=/usr/lib/x86_64-linux-gnu/faketime/libfaketime.so.1' >> ${WRAP_DIR}/${i}-${prog}
         echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${i}-${prog}
         echo "export COMPILER_PATH=${WRAP_DIR}/${i}" >> ${WRAP_DIR}/${i}-${prog}
         echo "\$REAL \$@" >> $WRAP_DIR/${i}-${prog}
         chmod +x ${WRAP_DIR}/${i}-${prog}
     done
   done
   }
 
   # Faketime for depends so intermediate results are comparable
   export PATH_orig=${PATH}
   create_global_faketime_wrappers "2000-01-01 12:00:00"
   create_per-host_faketime_wrappers "2000-01-01 12:00:00"
   create_per-host_linker_wrapper "2000-01-01 12:00:00"
   export PATH=${WRAP_DIR}:${PATH}
 
   cd bitcoin
   BASEPREFIX=`pwd`/depends
   # Build dependencies for each host
   for i in $HOSTS; do
     make ${MAKEOPTS} -C ${BASEPREFIX} HOST="${i}"
   done
 
   # Faketime for binaries
   export PATH=${PATH_orig}
   create_global_faketime_wrappers "${REFERENCE_DATETIME}"
   create_per-host_faketime_wrappers "${REFERENCE_DATETIME}"
   create_per-host_linker_wrapper "${REFERENCE_DATETIME}"
   export PATH=${WRAP_DIR}:${PATH}
 
   # Create the release tarball using (arbitrarily) the first host
   ./autogen.sh
   CONFIG_SITE=${BASEPREFIX}/`echo "${HOSTS}" | awk '{print $1;}'`/share/config.site ./configure --prefix=/
   make dist
   SOURCEDIST=`echo bitcoin-abc-*.tar.gz`
   DISTNAME=`echo ${SOURCEDIST} | sed 's/.tar.*//'`
 
   # Correct tar file order
   mkdir -p temp
   pushd temp
   tar xf ../$SOURCEDIST
   find bitcoin-abc-* | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ../$SOURCEDIST
   mkdir -p $OUTDIR/src
   cp ../$SOURCEDIST $OUTDIR/src
   popd
 
   ORIGPATH="$PATH"
   # Extract the release tarball into a dir for each host and build
   for i in ${HOSTS}; do
     export PATH=${BASEPREFIX}/${i}/native/bin:${ORIGPATH}
     mkdir -p distsrc-${i}
     cd distsrc-${i}
     INSTALLPATH=`pwd`/installed/${DISTNAME}
     mkdir -p ${INSTALLPATH}
     tar --strip-components=1 -xf ../$SOURCEDIST
 
     CONFIG_SITE=${BASEPREFIX}/${i}/share/config.site ./configure --prefix=/ --disable-ccache --disable-maintainer-mode --disable-dependency-tracking ${CONFIGFLAGS} CFLAGS="${HOST_CFLAGS}" CXXFLAGS="${HOST_CXXFLAGS}"
     make ${MAKEOPTS}
     make ${MAKEOPTS} -C src check-security
     make deploy
     make install DESTDIR=${INSTALLPATH}
     cp -f bitcoin-abc-*setup*.exe $OUTDIR/
     cd installed
     mv ${DISTNAME}/bin/*.dll ${DISTNAME}/lib/
     find . -name "lib*.la" -delete
     find . -name "lib*.a" -delete
     rm -rf ${DISTNAME}/lib/pkgconfig
     find ${DISTNAME}/bin -type f -executable -exec ${i}-objcopy --only-keep-debug {} {}.dbg \; -exec ${i}-strip -s {} \; -exec ${i}-objcopy --add-gnu-debuglink={}.dbg {} \;
     find ${DISTNAME}/lib -type f -exec ${i}-objcopy --only-keep-debug {} {}.dbg \; -exec ${i}-strip -s {} \; -exec ${i}-objcopy --add-gnu-debuglink={}.dbg {} \;
     find ${DISTNAME} -not -name "*.dbg"  -type f | sort | zip -X@ ${OUTDIR}/${DISTNAME}-${i}.zip
     find ${DISTNAME} -name "*.dbg"  -type f | sort | zip -X@ ${OUTDIR}/${DISTNAME}-${i}-debug.zip
     cd ../../
     rm -rf distsrc-${i}
   done
   cd $OUTDIR
   rename 's/-setup\.exe$/-setup-unsigned.exe/' *-setup.exe
   find . -name "*-setup-unsigned.exe" | sort | tar --no-recursion --mode='u+rw,go+r-w,a+X' --owner=0 --group=0 -c -T - | gzip -9n > ${OUTDIR}/${DISTNAME}-win-unsigned.tar.gz
   mv ${OUTDIR}/${DISTNAME}-x86_64-*-debug.zip ${OUTDIR}/${DISTNAME}-win64-debug.zip
   mv ${OUTDIR}/${DISTNAME}-i686-*-debug.zip ${OUTDIR}/${DISTNAME}-win32-debug.zip
   mv ${OUTDIR}/${DISTNAME}-x86_64-*.zip ${OUTDIR}/${DISTNAME}-win64.zip
   mv ${OUTDIR}/${DISTNAME}-i686-*.zip ${OUTDIR}/${DISTNAME}-win32.zip
diff --git a/contrib/gitian/provisioner.sh b/contrib/gitian/provisioner.sh
index 3342ebb27b..5f1b4dfd47 100644
--- a/contrib/gitian/provisioner.sh
+++ b/contrib/gitian/provisioner.sh
@@ -1,64 +1,60 @@
 #!/bin/bash -e
 
 # User to setup for building.  Vagrant is the default
 export BUILDUSER=${BUILDUSER:-vagrant}
 
 apt-get update
 apt-get install -y git ruby sudo apt-cacher-ng qemu-utils debootstrap \
 	lxc python-cheetah parted kpartx bridge-utils make curl 
 
 # the version of lxc-start in Debian needs to run as root, so make sure
 # that the build script can execute it without providing a password
 echo "%sudo ALL=NOPASSWD: /usr/bin/lxc-start" > /etc/sudoers.d/gitian-lxc
 echo "%sudo ALL=NOPASSWD: /usr/bin/lxc-execute" >> /etc/sudoers.d/gitian-lxc
 
 # make sure that USE_LXC is always set when logging in as vagrant,
 # and configure LXC IP addresses
 echo 'export USE_LXC=1' >> /home/${BUILDUSER}/.profile
 echo 'export LXC_BRIDGE=lxcbr0' >> /home/${BUILDUSER}/.profile
 echo 'export GITIAN_HOST_IP=10.0.3.1' >> /home/${BUILDUSER}/.profile
 echo 'export LXC_GUEST_IP=10.0.3.5' >> /home/${BUILDUSER}/.profile
 
 # Setup bridge
 echo 'USE_LXC_BRIDGE="true"' > /etc/default/lxc-net
 echo 'lxc.network.type = veth' > /etc/lxc/default.conf
 echo 'lxc.network.link = lxcbr0' >> /etc/lxc/default.conf
 echo 'lxc.network.flags = up' >> /etc/lxc/default.conf
 echo 'lxc.network.hwaddr = 00:16:3e:xx:xx:xx' >> /etc/lxc/default.conf
 service lxc-net restart
 
 # chdir into build user home directory
 cd /home/${BUILDUSER}/
 
 ## Install vm-builder
 wget http://archive.ubuntu.com/ubuntu/pool/universe/v/vm-builder/vm-builder_0.12.4+bzr494.orig.tar.gz
 echo "76cbf8c52c391160b2641e7120dbade5afded713afaa6032f733a261f13e6a8e  vm-builder_0.12.4+bzr494.orig.tar.gz" | sha256sum -c
 # (verification -- must return OK)
 tar -zxvf vm-builder_0.12.4+bzr494.orig.tar.gz
 cd vm-builder-0.12.4+bzr494
 sudo python setup.py install
 cd ..
 
 ## Install Gitian
 git clone https://github.com/devrandom/gitian-builder.git
 cd gitian-builder
 
-# This is required for multiarch support.  Once the associated pull-requests
-# are merged, these should be removed.
-git remote add deadalnix https://github.com/devrandom/gitian-builder.git
-git fetch deadalnix
 git config --global user.email "vagrant@vagrant.com"
 git config --global user.name "vagrant"
 
 chown -R ${BUILDUSER}:${BUILDUSER} /home/${BUILDUSER}  
 
 echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
 echo "!!! Provisioning Complete !!!!"
 echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
 echo 
 echo "As the user ${BUILDUSER} run the following commands to produce a linux build:"
-echo "export COMMIT=v0.16.0"
+echo "export COMMIT=v0.18.3"
 echo "export URL=https://github.com/Bitcoin-ABC/bitcoin-abc.git"
 echo "cd gitian-builder"
-echo './bin/make-base-vm --lxc --suite xenial --arch amd64'
-echo './bin/gbuild --commit bitcoin=${COMMIT} --url bitcoin=${URL} /vagrant/contrib/gitian-descriptors/gitian-linux.yml'
\ No newline at end of file
+echo './bin/make-base-vm --lxc --distro debian --suite stretch --arch amd64'
+echo './bin/gbuild --commit bitcoin=${COMMIT} --url bitcoin=${URL} /vagrant/contrib/gitian-descriptors/gitian-linux.yml'