diff --git a/centos_ci_build b/centos_ci_build
index 3d81147c..c4879d43 100755
--- a/centos_ci_build
+++ b/centos_ci_build
@@ -1,6 +1,6 @@
 #!/bin/sh
 # Build steps used in CentOS CI
 
-yum -y update
+dnf -y update
 uname -a
 SKIP_QA_HARNESS=1 ./runtests.sh
diff --git a/runtests.sh b/runtests.sh
index 07852495..c7a339ff 100755
--- a/runtests.sh
+++ b/runtests.sh
@@ -5,7 +5,7 @@
 
 echo -e "\n[+] `date` -> CentOS QA $0 starting."
 
-yum -d0 -y install bind-utils 
+dnf -d0 -y install bind-utils
 
 if [ "$?" -ne "0" ] ;then
   echo "[+] ERROR : not even able to install bind-utils pkg so all t_functional tests will fail"
@@ -21,7 +21,7 @@ LIB_FUNCTIONS='./tests/0_lib/functions.sh'
 # Human friendly symbols
 export readonly PASS=0
 export readonly FAIL=1
-# set debug level of yum install in t_InstallPackage
+# set debug level of dnf install in t_InstallPackage
 export YUMDEBUG=0
 
 [ -f $LIB_FUNCTIONS ] && source $LIB_FUNCTIONS || { echo -e "\n[+] `date` -> Unable to source functions library. Cannot continue\n"; exit $FAIL; }
diff --git a/tests/0_common/15_list_repos.sh b/tests/0_common/15_list_repos.sh
index 4f568cae..1a727419 100755
--- a/tests/0_common/15_list_repos.sh
+++ b/tests/0_common/15_list_repos.sh
@@ -2,6 +2,6 @@
 
 t_Log "Running $0 - Showing the repos we have configured"
 
-yum -d0 repolist -v
+dnf -d0 repolist -v
 
 t_CheckExitStatus $?
diff --git a/tests/0_common/20_upgrade_all.sh b/tests/0_common/20_upgrade_all.sh
index 89d10c1d..8eb81653 100755
--- a/tests/0_common/20_upgrade_all.sh
+++ b/tests/0_common/20_upgrade_all.sh
@@ -10,10 +10,10 @@ fi
 if [ "$centos_ver" -lt 8 ];then
   yum -d0 -y install deltarpm
 fi
-yum -d0 -y upgrade
+dnf -d0 -y upgrade
 
 t_Log "Running $0 - listing all used/available packages"
 
-yum list
+dnf list
 
 t_CheckExitStatus $?
diff --git a/tests/0_lib/functions.sh b/tests/0_lib/functions.sh
index 1b7231e4..65f52ff0 100755
--- a/tests/0_lib/functions.sh
+++ b/tests/0_lib/functions.sh
@@ -26,8 +26,8 @@ function t_InstallPackage
         mkdir /var/cache/{dnf,yum,system-upgrade}
         dnf makecache
     fi
-	t_Log "Attempting yum install: $*"
-	/usr/bin/yum -y -d${YUMDEBUG} install "$@"
+	t_Log "Attempting dnf install: $*"
+	/usr/bin/dnf -y -d${YUMDEBUG} install "$@"
   # TODO: add a hook here, to make sure all binary files have ldd run
   # against them, and that there are no missing linker targets
 	t_CheckExitStatus $?
@@ -42,12 +42,12 @@ function t_InstallPackageMinimal
     t_CheckExitStatus $?
 }
 
-# Description: call this to perform a yum-based removal of packages
+# Description: call this to perform a dnf-based removal of packages
 # Arguments: a space separated list of package names to remove.
 function t_RemovePackage
 {
-	t_Log "Attempting yum remove: $*"
-	/usr/bin/yum -y -d0 remove "$@"
+	t_Log "Attempting dnf remove: $*"
+	/usr/bin/dnf -y -d0 remove "$@"
 	t_CheckExitStatus $?
 }
 
diff --git a/tests/p_ipa-server/0-preclean.sh b/tests/p_ipa-server/0-preclean.sh
index 3477f861..a0369283 100644
--- a/tests/p_ipa-server/0-preclean.sh
+++ b/tests/p_ipa-server/0-preclean.sh
@@ -12,7 +12,7 @@ if (t_GetPkgRel basesystem | grep -qE 'el(6|7)')
   fi
   if rpm -q httpd &> /dev/null
     then
-    /usr/bin/yum -y remove httpd &> /dev/null
+    /usr/bin/dnf -y remove httpd &> /dev/null
    rm -rf /etc/httpd
   fi
 
@@ -23,7 +23,7 @@ if (t_GetPkgRel basesystem | grep -qE 'el(6|7)')
   fi
   if rpm -q bind &> /dev/null
     then
-    /usr/bin/yum -y remove bind &> /dev/null
+    /usr/bin/dnf -y remove bind &> /dev/null
     rm -rf /etc/named /var/named
   fi
 
@@ -46,14 +46,14 @@ if (t_GetPkgRel basesystem | grep -qE 'el(6|7)')
     cp /etc/ntp.conf /tmp/ntp.conf.ipa-tests
   fi
 
-  t_Log "Running $0 - Backing up saving yum history id"
-  /usr/bin/yum history list | awk 'NR == 4 {print $1}' > /tmp/yum-rollback-id.ipa-tests
+  t_Log "Running $0 - Backing up saving dnf history id"
+  /usr/bin/dnf history list | awk 'NR == 4 {print $1}' > /tmp/yum-rollback-id.ipa-tests
 
   t_Log "Running $0 - Cleaning up hosts file"
   sed -i "s/127.0.0.1 $(hostname)//" /etc/hosts
   
   t_Log "Running $0 - Cleaning previous tomcat/pki instances if any"
-  yum remove -d0 -y tomcat ipa-server >/dev/null 2>&1
+  dnf remove -d0 -y tomcat ipa-server >/dev/null 2>&1
   /bin/rm -Rf /var/lib/pki/pki-tomcat/ /etc/sysconfig/pki-tomcat /var/log/pki/pki-tomcat /etc/pki/pki-tomcat /etc/sysconfig/pki/tomcat/pki-tomcat
 
   t_Log "Running $0 - Backing up ssh_config"
diff --git a/tests/p_ipa-server/99-postclean.sh b/tests/p_ipa-server/99-postclean.sh
index 32774794..0c4e242b 100644
--- a/tests/p_ipa-server/99-postclean.sh
+++ b/tests/p_ipa-server/99-postclean.sh
@@ -29,7 +29,7 @@ if (t_GetPkgRel basesystem | grep -qE 'el(6|7)') && !(t_GetArch | grep -qE 'aarc
   fi
 
   t_Log "Running $0 - Rolling back to yum history id - this will take some time"
-    /usr/bin/yum -y history rollback $(cat /tmp/yum-rollback-id.ipa-tests) &> /dev/null
+    /usr/bin/dnf -y history rollback $(cat /tmp/yum-rollback-id.ipa-tests) &> /dev/null
 
   t_Log "Running $0 - Restoring ssh_config"
   ${CP} /etc/ssh/ssh_config.ipa-tests /etc/ssh/ssh_config
diff --git a/tests/p_kvdo/kvdo_runtest.sh b/tests/p_kvdo/kvdo_runtest.sh
index 57b785ed..532d6881 100755
--- a/tests/p_kvdo/kvdo_runtest.sh
+++ b/tests/p_kvdo/kvdo_runtest.sh
@@ -88,12 +88,12 @@ rlPhaseEnd
 rlPhaseStartSetup "Install software"
         if ! rlCheckRpm kmod-kvdo
         then
-                rlRun "yum install -y ${kvdo_pkg}" 0 "Installing kmod-kvdo" || rlDie "Unable to install 'kmod-kvdo' package"
+                rlRun "dnf install -y ${kvdo_pkg}" 0 "Installing kmod-kvdo" || rlDie "Unable to install 'kmod-kvdo' package"
         	rlAssertRpm kmod-kvdo
         fi
         if ! rlCheckRpm vdo
         then
-                rlRun "yum install -y ${vdo_pkg}" 0 "Installing vdo" || rlDie "Unable to install 'vdo' package"
+                rlRun "dnf install -y ${vdo_pkg}" 0 "Installing vdo" || rlDie "Unable to install 'vdo' package"
         	rlAssertRpm vdo
         fi
 rlPhaseEnd
diff --git a/tests/p_rpm/rpm_remove_pkg_test.sh b/tests/p_rpm/rpm_remove_pkg_test.sh
index ab85c7c2..32d524f8 100755
--- a/tests/p_rpm/rpm_remove_pkg_test.sh
+++ b/tests/p_rpm/rpm_remove_pkg_test.sh
@@ -11,5 +11,5 @@ rpm -q zsh | grep -q 'package zsh is not installed'
 
 t_CheckExitStatus $?
 
-t_Log "Clean yum metadata / cache"
-yum -y clean all
+t_Log "Clean dnf metadata / cache"
+dnf -y clean all
diff --git a/tests/p_yum/yum_remove_pkg_test.sh b/tests/p_yum/yum_remove_pkg_test.sh
index ca1a38f8..91a593d6 100755
--- a/tests/p_yum/yum_remove_pkg_test.sh
+++ b/tests/p_yum/yum_remove_pkg_test.sh
@@ -6,7 +6,7 @@ t_Log "Running $0 - yum remove package test."
 # Install zsh pkg
 t_InstallPackage zsh
 
-yum -d0 -y remove zsh && \
+dnf -d0 -y remove zsh && \
 rpm -q zsh | grep -q 'package zsh is not installed'
 
 t_CheckExitStatus $?