diff --git a/share/ruby-install/jruby/dependencies.txt b/share/ruby-install/jruby/dependencies.txt
index e6ad3e10..d1f003a0 100644
--- a/share/ruby-install/jruby/dependencies.txt
+++ b/share/ruby-install/jruby/dependencies.txt
@@ -4,3 +4,5 @@ yum: java-openjdk
 pacman: jre8-openjdk
 zypper: java-1.8.0-openjdk
 pkg: openjdk
+centos7: java-openjdk
+centos8: java-openjdk
diff --git a/share/ruby-install/mruby/dependencies.txt b/share/ruby-install/mruby/dependencies.txt
index 2cba9b60..ff56847d 100644
--- a/share/ruby-install/mruby/dependencies.txt
+++ b/share/ruby-install/mruby/dependencies.txt
@@ -6,3 +6,5 @@ brew: bison
 pacman: gcc make bison
 zypper: gcc make bison
 pkg: gcc automake bison
+centos7: gcc make bison
+centos8: gcc make bison
diff --git a/share/ruby-install/package_manager.sh b/share/ruby-install/package_manager.sh
index e4030c63..8ec4af8f 100644
--- a/share/ruby-install/package_manager.sh
+++ b/share/ruby-install/package_manager.sh
@@ -3,9 +3,22 @@
 #
 # Auto-detect the package manager.
 #
+function detect_distro()
+{
+	[ "$1" = "centos7" ] && test -f  /etc/redhat-release && \
+		grep -q '^CentOS Linux release 7' /etc/redhat-release && return 0
+
+	[ "$1" = "centos8" ] && test -f  /etc/redhat-release && \
+		grep -q '^CentOS Linux release 8' /etc/redhat-release && return 0
+
+	return 1
+}
+
 function detect_package_manager()
 {
-	if   command -v zypper  >/dev/null; then package_manager="zypper"
+	if   detect_distro centos7        ; then package_manager="centos7"
+	elif detect_distro centos8        ; then package_manager="centos8"
+	elif command -v zypper  >/dev/null; then package_manager="zypper"
 	elif command -v apt-get >/dev/null; then package_manager="apt"
 	elif command -v dnf     >/dev/null; then package_manager="dnf"
 	elif command -v yum     >/dev/null; then package_manager="yum"
@@ -49,6 +62,8 @@ function install_packages()
 			fi
 			;;
 		zypper) $sudo zypper -n in -l $* || return $? ;;
+		centos7)$sudo yum install -y "$@" || return $?     ;;
+		centos8)$sudo dnf install -y --enablerepo PowerTools "$@" || return $?     ;;
 		"")	warn "Could not determine Package Manager. Proceeding anyway." ;;
 	esac
 }
diff --git a/share/ruby-install/rbx/dependencies.txt b/share/ruby-install/rbx/dependencies.txt
index 37b6a5ba..8d00a43f 100644
--- a/share/ruby-install/rbx/dependencies.txt
+++ b/share/ruby-install/rbx/dependencies.txt
@@ -6,3 +6,5 @@ brew: openssl readline libyaml gdbm
 pacman: gcc automake flex bison ruby llvm libedit zlib libyaml openssl gdbm readline ncurses
 zypper: gcc gcc-c++ make automake flex bison ruby2.2-devel ruby2.2-rubygem-bundler llvm-devel zlib-devel libyaml-devel libopenssl-devel gdbm-devel readline-devel ncurses-devel
 pkg: gmake flex bison ruby devel/ruby-gems llvm-devel openssl readline libyaml gdbm
+centos7: gcc gcc-c++ automake flex bison ruby-devel rubygems llvm-static llvm-devel libedit-devel zlib-devel libyaml-devel openssl-devel gdbm-devel readline-devel ncurses-devel bzip2
+centos8: gcc gcc-c++ automake flex bison ruby-devel rubygems llvm-static llvm-devel libedit-devel zlib-devel libyaml-devel openssl-devel gdbm-devel readline-devel ncurses-devel bzip2
diff --git a/share/ruby-install/ruby/dependencies.txt b/share/ruby-install/ruby/dependencies.txt
index 1d877061..69aac649 100644
--- a/share/ruby-install/ruby/dependencies.txt
+++ b/share/ruby-install/ruby/dependencies.txt
@@ -6,3 +6,5 @@ brew: automake bison openssl readline libyaml gdbm libffi
 pacman: gcc make bison zlib ncurses openssl readline libyaml gdbm libffi
 zypper: gcc make automake zlib-devel libyaml-devel libopenssl-devel gdbm-devel readline-devel ncurses-devel libffi-devel
 pkg: openssl readline libyaml gdbm libffi
+centos7: gcc automake bison zlib-devel libyaml-devel openssl-devel gdbm-devel readline-devel ncurses-devel libffi-devel bzip2
+centos8: gcc automake bison zlib-devel libyaml-devel openssl-devel gdbm-devel readline-devel ncurses-devel libffi-devel bzip2
diff --git a/share/ruby-install/truffleruby/dependencies.txt b/share/ruby-install/truffleruby/dependencies.txt
index 9e42946c..8627442b 100644
--- a/share/ruby-install/truffleruby/dependencies.txt
+++ b/share/ruby-install/truffleruby/dependencies.txt
@@ -6,3 +6,5 @@ brew: openssl llvm@4
 pacman: zlib openssl clang llvm make
 zypper: zlib-devel libopenssl-devel llvm-clang llvm make
 pkg: openssl llvm-devel
+centos7: zlib-devel openssl-devel clang llvm make
+centos8: zlib-devel openssl-devel clang llvm make