diff --git a/INSTALL/INSTALL.sh b/INSTALL/INSTALL.sh
index 733087984..1df4b2d03 100644
--- a/INSTALL/INSTALL.sh
+++ b/INSTALL/INSTALL.sh
@@ -953,7 +953,8 @@ composer73 () {
   # Update composer.phar
   # If hash changes, check here: https://getcomposer.org/download/ and replace with the correct one
   # Current Sum for: v1.8.3
-  SHA384_SUM='baf1608c33254d00611ac1705c1d9958c817a1a33bce370c0595974b342601bd80b92a3f46067da89e3b06bff421f182'
+  SHA384_SUM="$(wget -q -O - https://composer.github.io/installer.sig)"
+php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
   $SUDO_WWW php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
   $SUDO_WWW php -r "if (hash_file('SHA384', 'composer-setup.php') === '$SHA384_SUM') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); exit(137); } echo PHP_EOL;"
   checkFail "composer.phar checksum failed, please investigate manually. " $?
diff --git a/INSTALL/INSTALL.sh.sha1 b/INSTALL/INSTALL.sh.sha1
index bae84ccaf..6bfcdb946 100644
--- a/INSTALL/INSTALL.sh.sha1
+++ b/INSTALL/INSTALL.sh.sha1
@@ -1 +1 @@
-e56b76bd7b24e78a7f27c732874124bd57974739  INSTALL.sh
+966b18b8623bd83c9235c8a210d741db25a937d7  INSTALL.sh
diff --git a/INSTALL/INSTALL.sh.sha256 b/INSTALL/INSTALL.sh.sha256
index 9682c1e7e..d072e20c9 100644
--- a/INSTALL/INSTALL.sh.sha256
+++ b/INSTALL/INSTALL.sh.sha256
@@ -1 +1 @@
-e983eb6bd1158848703fc7d364ae1d0305a2ce4bf35b13f208b82203f3ac5f90  INSTALL.sh
+61c7f3242e7eeae16ac3cf65b60eb893c642f90f8b819be0670d25407ffd8b79  INSTALL.sh
diff --git a/INSTALL/INSTALL.sh.sha384 b/INSTALL/INSTALL.sh.sha384
index 3e07d1c63..cb858ff37 100644
--- a/INSTALL/INSTALL.sh.sha384
+++ b/INSTALL/INSTALL.sh.sha384
@@ -1 +1 @@
-7c98b8afaaebff10611b8f7f743b94c35167b601b4fed2e02bc2b64689fa17e53be9af583323871a49d6f8de5934e8b2  INSTALL.sh
+41d7749f890bb150d3914bae0a986609073b1b7403cb561cd662957c529fc3bf382f7d7a7692e8fe1525cdc49d7b1cad  INSTALL.sh
diff --git a/INSTALL/INSTALL.sh.sha512 b/INSTALL/INSTALL.sh.sha512
index 8624d2b8b..074013296 100644
--- a/INSTALL/INSTALL.sh.sha512
+++ b/INSTALL/INSTALL.sh.sha512
@@ -1 +1 @@
-b8476679daeb7943cd3fa12ebd354508c69c15b84ab882fd41cc0a74cd35bb245a64b21c059dbc86288cb9c3f52dd752573bc8b40481f74a4019cd6ecc70caa7  INSTALL.sh
+f7fd098037a4b57a4b37a254ca4ddc80e418cab557518d4de73ef1ae4e382195729f71919510199e48e5e92af522f8d9bfe7c03ed6ad4423534c75a9016ef40f  INSTALL.sh
diff --git a/docs/INSTALL.rhel7.md b/docs/INSTALL.rhel7.md
index 96d81a38f..aa73a92c5 100644
--- a/docs/INSTALL.rhel7.md
+++ b/docs/INSTALL.rhel7.md
@@ -317,8 +317,9 @@ installCake_RHEL ()
   sudo chown $WWW_USER:$WWW_USER /usr/share/httpd/.composer
   cd $PATH_TO_MISP/app
   # Update composer.phar (optional)
+  #EXPECTED_SIGNATURE="$(wget -q -O - https://composer.github.io/installer.sig)"
   #$SUDO_WWW $RUN_PHP -- php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
-  #$SUDO_WWW $RUN_PHP -- php -r "if (hash_file('SHA384', 'composer-setup.php') === 'baf1608c33254d00611ac1705c1d9958c817a1a33bce370c0595974b342601bd80b92a3f46067da89e3b06bff421f182') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
+  #$SUDO_WWW $RUN_PHP -- php -r "if (hash_file('SHA384', 'composer-setup.php') === '$EXPECTED_SIGNATURE') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
   #$SUDO_WWW $RUN_PHP "php composer-setup.php"
   #$SUDO_WWW $RUN_PHP -- php -r "unlink('composer-setup.php');"
   $SUDO_WWW $RUN_PHP "php composer.phar install"
diff --git a/docs/generic/supportFunctions.md b/docs/generic/supportFunctions.md
index dc2044b38..8039a7683 100644
--- a/docs/generic/supportFunctions.md
+++ b/docs/generic/supportFunctions.md
@@ -798,7 +798,8 @@ composer73 () {
   # Update composer.phar
   # If hash changes, check here: https://getcomposer.org/download/ and replace with the correct one
   # Current Sum for: v1.8.3
-  SHA384_SUM='baf1608c33254d00611ac1705c1d9958c817a1a33bce370c0595974b342601bd80b92a3f46067da89e3b06bff421f182'
+  SHA384_SUM="$(wget -q -O - https://composer.github.io/installer.sig)"
+php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
   $SUDO_WWW php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
   $SUDO_WWW php -r "if (hash_file('SHA384', 'composer-setup.php') === '$SHA384_SUM') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); exit(137); } echo PHP_EOL;"
   checkFail "composer.phar checksum failed, please investigate manually. " $?
diff --git a/docs/xINSTALL.OpenBSD.md b/docs/xINSTALL.OpenBSD.md
index 16e8feeed..8815a93c3 100644
--- a/docs/xINSTALL.OpenBSD.md
+++ b/docs/xINSTALL.OpenBSD.md
@@ -399,8 +399,9 @@ doas /usr/local/virtualenvs/MISP/bin/pip install git+https://github.com/kbandla/
 # Install CakeResque along with its dependencies if you intend to use the built in background jobs:
 cd /var/www/htdocs/MISP/app
 doas mkdir /var/www/.composer ; doas chown www:www /var/www/.composer
+EXPECTED_SIGNATURE="$(wget -q -O - https://composer.github.io/installer.sig)"
 doas -u www php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
-doas -u www php -r "if (hash_file('SHA384', 'composer-setup.php') === 'baf1608c33254d00611ac1705c1d9958c817a1a33bce370c0595974b342601bd80b92a3f46067da89e3b06bff421f182') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
+doas -u www php -r "if (hash_file('SHA384', 'composer-setup.php') === '$EXPECTED_SIGNATURE') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
 doas -u www env HOME=/var/www php composer-setup.php
 doas -u www php -r "unlink('composer-setup.php');"
 doas -u www env HOME=/var/www php composer.phar install
diff --git a/docs/xINSTALL.centos6.md b/docs/xINSTALL.centos6.md
index 2d650d954..f603250b6 100644
--- a/docs/xINSTALL.centos6.md
+++ b/docs/xINSTALL.centos6.md
@@ -240,8 +240,9 @@ sudo mkdir /var/www/.composer/
 sudo chown apache:apache /var/www/.composer/
 cd $PATH_TO_MISP/app
 # Update composer.phar (optional)
+#EXPECTED_SIGNATURE="$(wget -q -O - https://composer.github.io/installer.sig)"
 #$SUDO_WWW $RUN_PHP -- php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
-#$SUDO_WWW $RUN_PHP -- php -r "if (hash_file('SHA384', 'composer-setup.php') === 'baf1608c33254d00611ac1705c1d9958c817a1a33bce370c0595974b342601bd80b92a3f46067da89e3b06bff421f182') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
+#$SUDO_WWW $RUN_PHP -- php -r "if (hash_file('SHA384', 'composer-setup.php') === '$EXPECTED_SIGNATURE') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
 #$SUDO_WWW $RUN_PHP "php composer-setup.php"
 #$SUDO_WWW $RUN_PHP -- php -r "unlink('composer-setup.php');"
 $SUDO_WWW $RUN_PHP "php composer.phar install"
diff --git a/docs/xINSTALL.centos7.md b/docs/xINSTALL.centos7.md
index 6789004c4..f4cd05492 100644
--- a/docs/xINSTALL.centos7.md
+++ b/docs/xINSTALL.centos7.md
@@ -223,8 +223,9 @@ sudo mkdir /usr/share/httpd/.composer
 sudo chown ${WWW_USER}:${WWW_USER} /usr/share/httpd/.composer
 cd $PATH_TO_MISP/app
 # Update composer.phar (optional)
+#EXPECTED_SIGNATURE="$(wget -q -O - https://composer.github.io/installer.sig)"
 #$SUDO_WWW $RUN_PHP -- php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
-#$SUDO_WWW $RUN_PHP -- php -r "if (hash_file('SHA384', 'composer-setup.php') === 'baf1608c33254d00611ac1705c1d9958c817a1a33bce370c0595974b342601bd80b92a3f46067da89e3b06bff421f182') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
+#$SUDO_WWW $RUN_PHP -- php -r "if (hash_file('SHA384', 'composer-setup.php') === '$EXPECTED_SIGNATURE') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
 #$SUDO_WWW $RUN_PHP "php composer-setup.php"
 #$SUDO_WWW $RUN_PHP -- php -r "unlink('composer-setup.php');"
 $SUDO_WWW $RUN_PHP "php composer.phar install"
diff --git a/docs/xINSTALL.debian9.md b/docs/xINSTALL.debian9.md
index 756ffcfed..49f051843 100644
--- a/docs/xINSTALL.debian9.md
+++ b/docs/xINSTALL.debian9.md
@@ -217,8 +217,9 @@ cd $PATH_TO_MISP/app
 # Make composer cache happy
 sudo mkdir /var/www/.composer ; sudo chown $WWW_USER:$WWW_USER /var/www/.composer
 # Update composer.phar
+#EXPECTED_SIGNATURE="$(wget -q -O - https://composer.github.io/installer.sig)"
 # $SUDO_WWW php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
-# $SUDO_WWW php -r "if (hash_file('SHA384', 'composer-setup.php') === 'baf1608c33254d00611ac1705c1d9958c817a1a33bce370c0595974b342601bd80b92a3f46067da89e3b06bff421f182') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
+# $SUDO_WWW php -r "if (hash_file('SHA384', 'composer-setup.php') === '$EXPECTED_SIGNATURE') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
 # $SUDO_WWW php composer-setup.php
 # $SUDO_WWW php -r "unlink('composer-setup.php');"
 $SUDO_WWW php composer.phar install