diff --git a/contrib/auto_gdb/dash_dbg.sh b/contrib/auto_gdb/dash_dbg.sh
index b1e1b2fd9c..dd9588c906 100755
--- a/contrib/auto_gdb/dash_dbg.sh
+++ b/contrib/auto_gdb/dash_dbg.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # use testnet settings,  if you need mainnet,  use ~/.dashcore/dashd.pid file instead
 export LC_ALL=C
 
diff --git a/contrib/gitian-descriptors/gitian-linux.yml b/contrib/gitian-descriptors/gitian-linux.yml
index 7944460847..3b11890ab1 100755
--- a/contrib/gitian-descriptors/gitian-linux.yml
+++ b/contrib/gitian-descriptors/gitian-linux.yml
@@ -80,7 +80,7 @@ script: |
 
   function create_global_faketime_wrappers {
   for prog in ${FAKETIME_PROGS}; do
-    echo '#!/bin/bash' > ${WRAP_DIR}/${prog}
+    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}
@@ -94,7 +94,7 @@ script: |
   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 '#!/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}
@@ -126,7 +126,7 @@ script: |
   for prog in gcc g++; do
   rm -f ${WRAP_DIR}/${prog}
   cat << EOF > ${WRAP_DIR}/${prog}
-  #!/bin/bash
+  #!/usr/bin/env bash
   # GCCVERSION=${GCCVERSION}
   REAL="`which -a ${prog} | grep -v ${WRAP_DIR}/${prog} | head -1`"
   for var in "\$@"
diff --git a/contrib/gitian-descriptors/gitian-win.yml b/contrib/gitian-descriptors/gitian-win.yml
index 000f8509cc..0a94990b7f 100755
--- a/contrib/gitian-descriptors/gitian-win.yml
+++ b/contrib/gitian-descriptors/gitian-win.yml
@@ -72,7 +72,7 @@ script: |
 
   function create_global_faketime_wrappers {
   for prog in ${FAKETIME_PROGS}; do
-    echo '#!/bin/bash' > ${WRAP_DIR}/${prog}
+    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}
@@ -86,7 +86,7 @@ script: |
   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 '#!/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}
@@ -104,7 +104,7 @@ script: |
   for i in $HOSTS; do
     mkdir -p ${WRAP_DIR}/${i}
     for prog in collect2; do
-        echo '#!/bin/bash' > ${WRAP_DIR}/${i}/${prog}
+        echo '#!/usr/bin/env bash' > ${WRAP_DIR}/${i}/${prog}
         echo "# GCCVERSION=${GCCVERSION}" >> ${WRAP_DIR}/${i}/${prog}
         REAL=$(${i}-gcc -print-prog-name=${prog})
         echo "export MALLOC_PERTURB_=255" >> ${WRAP_DIR}/${i}/${prog}
@@ -113,7 +113,7 @@ script: |
         touch -d "${REFERENCE_DATETIME}" ${WRAP_DIR}/${i}/${prog}
     done
     for prog in gcc g++; do
-        echo '#!/bin/bash' > ${WRAP_DIR}/${i}-${prog}
+        echo '#!/usr/bin/env bash' > ${WRAP_DIR}/${i}-${prog}
         echo "# GCCVERSION=${GCCVERSION}" >> ${WRAP_DIR}/${i}-${prog}
         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}