diff --git a/files/bash/available_updates_rh.sh b/files/bash/available_updates_rh.sh
index 97a46b0..df3ab7c 100755
--- a/files/bash/available_updates_rh.sh
+++ b/files/bash/available_updates_rh.sh
@@ -6,7 +6,13 @@
 # Security: kernel-3.14.2-200.fc20.x86_64 is the currently running version
 # ---
 # We need to filter those out as they screw up the package listing
-PKGS=$(yum -q check-update 2>/dev/null | egrep -v "is broken|^Security:|^Loaded plugins" | awk '/^[[:alnum:]]/ {print $0}' | sort)
+#
+# Also the PhotonOS version of tdnf generates lines by printing spaces, the
+# repository, a carriage return, (less) spaces, the version, a carriage return,
+# the package name and a line feed.  The human output is unchanged but this
+# confuse the rest of the tooling, so "fix" the output to have the expected
+# format.
+PKGS=$(yum -q check-update 2>/dev/null | egrep -v "is broken|^Security:|^Loaded plugins" | awk '{ split($0, r, "\x0d"); res = r[1]; for (f in r) { keep = substr(res, 1 + length(r[f])); res = r[f] keep }; print res }' | grep -e '^[[:alnum:]]' | sort)
 cat <<EOF
 {
   "updates": [
diff --git a/tasks/available_updates_linux.sh b/tasks/available_updates_linux.sh
index 0b05b18..c26c1a5 100644
--- a/tasks/available_updates_linux.sh
+++ b/tasks/available_updates_linux.sh
@@ -5,7 +5,7 @@ source "${PT__installdir}/patching/files/bash/os_test.sh"
 
 case $OS_RELEASE in
 ################################################################################  
-  RHEL | CENTOS | FEDORA | ROCKY | OL | ALMALINUX)
+  RHEL | CENTOS | FEDORA | ROCKY | OL | ALMALINUX | PHOTON)
     # RedHat variant
     source "${PT__installdir}/patching/files/bash/available_updates_rh.sh"
     ;;
diff --git a/tasks/cache_remove_linux.sh b/tasks/cache_remove_linux.sh
index 06f646e..1ef4c51 100644
--- a/tasks/cache_remove_linux.sh
+++ b/tasks/cache_remove_linux.sh
@@ -5,7 +5,7 @@ source "${PT__installdir}/patching/files/bash/os_test.sh"
 
 case $OS_RELEASE in
 ################################################################################  
-  RHEL | CENTOS | FEDORA | ROCKY | OL | ALMALINUX)
+  RHEL | CENTOS | FEDORA | ROCKY | OL | ALMALINUX | PHOTON)
     # RedHat variant
     # clean yum cache
     OUTPUT=$(yum clean all 2>&1)
diff --git a/tasks/cache_update_linux.sh b/tasks/cache_update_linux.sh
index b087ceb..0f1b839 100644
--- a/tasks/cache_update_linux.sh
+++ b/tasks/cache_update_linux.sh
@@ -11,7 +11,7 @@ source "${PT__installdir}/patching/files/bash/os_test.sh"
 
 case $OS_RELEASE in
 ################################################################################
-  RHEL | CENTOS | FEDORA | ROCKY | OL | ALMALINUX)
+  RHEL | CENTOS | FEDORA | ROCKY | OL | ALMALINUX | PHOTON)
     # RedHat variant
     # update yum cache
     OUTPUT=$(yum clean expire-cache 2>&1)
diff --git a/tasks/reboot_required_linux.sh b/tasks/reboot_required_linux.sh
index 12538b6..a474c0c 100644
--- a/tasks/reboot_required_linux.sh
+++ b/tasks/reboot_required_linux.sh
@@ -8,7 +8,7 @@ export REBOOT_REQUIRED="false"
 
 case $OS_RELEASE in
 ################################################################################  
-  RHEL | CENTOS | FEDORA | ROCKY | OL | ALMALINUX)
+  RHEL | CENTOS | FEDORA | ROCKY | OL | ALMALINUX | PHOTON)
     # RedHat variant
     source "${PT__installdir}/patching/files/bash/reboot_required_rh.sh"
     ;;
diff --git a/tasks/update_linux.sh b/tasks/update_linux.sh
index ce0c7ff..8a5de8c 100644
--- a/tasks/update_linux.sh
+++ b/tasks/update_linux.sh
@@ -24,7 +24,7 @@ STATUS=0
 
 case $OS_RELEASE in
 ################################################################################  
-  RHEL | CENTOS | FEDORA | ROCKY | OL | ALMALINUX)
+  RHEL | CENTOS | FEDORA | ROCKY | OL | ALMALINUX | PHOTON)
     # RedHat variant
     source "${PT__installdir}/patching/files/bash/update_rh.sh"
     STATUS=$?