diff --git a/contrib/gitian-descriptors/gitian-linux.yml b/contrib/gitian-descriptors/gitian-linux.yml
index 12a1064727..74c56f7546 100755
--- a/contrib/gitian-descriptors/gitian-linux.yml
+++ b/contrib/gitian-descriptors/gitian-linux.yml
@@ -5,7 +5,7 @@ distro: "ubuntu"
 suites:
 - "bionic"
 architectures:
-- "amd64"
+- "linux64"
 packages:
 - "curl"
 - "g++-aarch64-linux-gnu"
@@ -81,12 +81,13 @@ script: |
   # We include the GCC version in all wrappers so that ccache can detect compiler upgrades when hashing the wrappers
   GCCVERSION=`gcc --version | head -1`
 
+  # Use $LIB in LD_PRELOAD to avoid hardcoding the dir (See `man ld.so`)
   function create_global_faketime_wrappers {
   for prog in ${FAKETIME_PROGS}; do
     echo '#!/usr/bin/env bash' > ${WRAP_DIR}/${prog}
     echo "# GCCVERSION=${GCCVERSION}" >> ${WRAP_DIR}/${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 LD_PRELOAD='/usr/\$LIB/faketime/libfaketime.so.1'" >> ${WRAP_DIR}/${prog}
     echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${prog}
     echo "\$REAL \$@" >> $WRAP_DIR/${prog}
     chmod +x ${WRAP_DIR}/${prog}
@@ -102,7 +103,7 @@ script: |
             echo '#!/usr/bin/env bash' > ${WRAP_DIR}/${i}-${prog}
             echo "# GCCVERSION=${GCCVERSION}" >> ${WRAP_DIR}/${i}-${prog}
             echo "REAL=\`which -a ${i}-${prog}-8 | 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 LD_PRELOAD='/usr/\$LIB/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}
diff --git a/contrib/gitian-descriptors/gitian-osx-signer.yml b/contrib/gitian-descriptors/gitian-osx-signer.yml
index 98eefecb80..2118d38099 100644
--- a/contrib/gitian-descriptors/gitian-osx-signer.yml
+++ b/contrib/gitian-descriptors/gitian-osx-signer.yml
@@ -4,7 +4,7 @@ distro: "ubuntu"
 suites:
 - "bionic"
 architectures:
-- "amd64"
+- "linux64"
 packages:
 - "faketime"
 - "xorriso"
@@ -25,7 +25,7 @@ script: |
   for prog in ${FAKETIME_PROGS}; do
     echo '#!/usr/bin/env 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 LD_PRELOAD='/usr/\$LIB/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}
diff --git a/contrib/gitian-descriptors/gitian-osx.yml b/contrib/gitian-descriptors/gitian-osx.yml
index 8e84c12855..6aa72e9346 100644
--- a/contrib/gitian-descriptors/gitian-osx.yml
+++ b/contrib/gitian-descriptors/gitian-osx.yml
@@ -5,7 +5,7 @@ distro: "ubuntu"
 suites:
 - "bionic"
 architectures:
-- "amd64"
+- "linux64"
 packages:
 - "ca-certificates"
 - "curl"
@@ -72,11 +72,12 @@ script: |
 
   export ZERO_AR_DATE=1
 
+  # Use $LIB in LD_PRELOAD to avoid hardcoding the dir (See `man ld.so`)
   function create_global_faketime_wrappers {
   for prog in ${FAKETIME_PROGS}; do
     echo '#!/usr/bin/env 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 LD_PRELOAD='/usr/\$LIB/faketime/libfaketime.so.1'" >> ${WRAP_DIR}/${prog}
     echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${prog}
     echo "\$REAL \$@" >> $WRAP_DIR/${prog}
     chmod +x ${WRAP_DIR}/${prog}
@@ -89,7 +90,7 @@ script: |
     for prog in ${FAKETIME_HOST_PROGS}; do
         echo '#!/usr/bin/env 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 LD_PRELOAD='/usr/\$LIB/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}
diff --git a/contrib/gitian-descriptors/gitian-win-signer.yml b/contrib/gitian-descriptors/gitian-win-signer.yml
index 4c21caa01b..e78f1ccde3 100644
--- a/contrib/gitian-descriptors/gitian-win-signer.yml
+++ b/contrib/gitian-descriptors/gitian-win-signer.yml
@@ -4,7 +4,7 @@ distro: "ubuntu"
 suites:
 - "bionic"
 architectures:
-- "amd64"
+- "linux64"
 packages:
 - "libssl-dev" # do not merge bitcoin#13782, see https://github.com/dashpay/dash/pull/3894
 - "autoconf"
diff --git a/contrib/gitian-descriptors/gitian-win.yml b/contrib/gitian-descriptors/gitian-win.yml
index 03927be7ca..9fa1a9e36c 100755
--- a/contrib/gitian-descriptors/gitian-win.yml
+++ b/contrib/gitian-descriptors/gitian-win.yml
@@ -5,7 +5,7 @@ distro: "ubuntu"
 suites:
 - "bionic"
 architectures:
-- "amd64"
+- "linux64"
 packages:
 - "curl"
 - "g++"
@@ -69,12 +69,13 @@ script: |
   # We include the GCC version in all wrappers so that ccache can detect compiler upgrades when hashing the wrappers
   GCCVERSION=`gcc --version | head -1`
 
+  # Use $LIB in LD_PRELOAD to avoid hardcoding the dir (See `man ld.so`)
   function create_global_faketime_wrappers {
   for prog in ${FAKETIME_PROGS}; do
     echo '#!/usr/bin/env bash' > ${WRAP_DIR}/${prog}
     echo "# GCCVERSION=${GCCVERSION}" >> ${WRAP_DIR}/${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 LD_PRELOAD='/usr/\$LIB/faketime/libfaketime.so.1'" >> ${WRAP_DIR}/${prog}
     echo "export FAKETIME=\"$1\"" >> ${WRAP_DIR}/${prog}
     echo "\$REAL \$@" >> $WRAP_DIR/${prog}
     chmod +x ${WRAP_DIR}/${prog}
@@ -88,7 +89,7 @@ script: |
         echo '#!/usr/bin/env bash' > ${WRAP_DIR}/${i}-${prog}
         echo "# GCCVERSION=${GCCVERSION}" >> ${WRAP_DIR}/${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 LD_PRELOAD='/usr/\$LIB/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}
@@ -107,7 +108,7 @@ script: |
         echo "REAL=\`which -a ${i}-${prog}-posix | grep -v ${WRAP_DIR}/${i}-${prog} | head -1\`" >> ${WRAP_DIR}/${i}-${prog}
         echo '# Add the gcc version to the wrapper so that ccache takes this into account (we use CCACHE_COMPILERCHECK=content)' >> ${WRAP_DIR}/${i}-${prog}
         echo "# `${prog} --version | 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 LD_PRELOAD='/usr/\$LIB/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}