diff --git a/contrib/gitian-descriptors/gitian-linux.yml b/contrib/gitian-descriptors/gitian-linux.yml
index e0b9f743972..4df6d600c87 100644
--- 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"
@@ -63,7 +63,7 @@ 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=\"$1\"" >> ${WRAP_DIR}/${prog}
     echo "\$REAL \$@" >> $WRAP_DIR/${prog}
     chmod +x ${WRAP_DIR}/${prog}
@@ -77,7 +77,7 @@ script: |
         then
             echo '#!/usr/bin/env bash' > ${WRAP_DIR}/${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 4cfca403b13..9957fc0514d 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"
 remotes:
@@ -24,7 +24,7 @@ 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 a563bef778e..d37266cce2a 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"
@@ -59,7 +59,7 @@ 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=\"$1\"" >> ${WRAP_DIR}/${prog}
     echo "\$REAL \$@" >> $WRAP_DIR/${prog}
     chmod +x ${WRAP_DIR}/${prog}
@@ -71,7 +71,7 @@ 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 656c6d9b7a8..8076fe13af5 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:
 # Once osslsigncode supports openssl 1.1, we can change this back to libssl-dev
 - "libssl1.0-dev"
diff --git a/contrib/gitian-descriptors/gitian-win.yml b/contrib/gitian-descriptors/gitian-win.yml
index 1c3d6a8dc81..dd6a006ff67 100644
--- 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++"
@@ -52,7 +52,7 @@ 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=\"$1\"" >> ${WRAP_DIR}/${prog}
     echo "\$REAL \$@" >> $WRAP_DIR/${prog}
     chmod +x ${WRAP_DIR}/${prog}
@@ -64,7 +64,7 @@ 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}
@@ -79,7 +79,7 @@ script: |
     for prog in gcc g++; do
         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 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}