diff --git a/files/yum_update.sh b/files/yum_update.sh
index 62c15fd..ed9546c 100755
--- a/files/yum_update.sh
+++ b/files/yum_update.sh
@@ -4,9 +4,17 @@ set -eoux pipefail
 
 packages_for_update=
 if [ -n "$1" ] && command -v repoquery >/dev/null 2>&1; then
-    installed=$(rpm -qa --qf "%{NAME}\n" | sort)
-    available=$(repoquery --provides --disablerepo='*' --enablerepo=$1 --qf %{NAME} -a | cut -d= -f1 | sort)
-    packages_for_update=$(comm -12 <(printf "%s\n" $installed) <(printf "%s\n" $available))
+    installed_versions=$(rpm -qa --qf "%{NAME} = %{VERSION}-%{RELEASE}\n" | sort)
+    available_versions=$(repoquery --provides --disablerepo='*' --enablerepo=$1 -a | sort)
+    uptodate_versions=$(comm -12 <(printf "%s\n" "$installed_versions") <(printf "%s\n" "$available_versions"))
+
+
+    installed=$(printf "%s\n" "$installed_versions" | cut -d= -f1 | sort)
+    available=$(printf "%s\n" "$available_versions" | cut -d= -f1 | sort)
+    uptodate=$(printf "%s\n" "$uptodate_versions" | cut -d= -f1 | sort)
+
+    installed_for_update=$(comm -23 <(printf "%s\n" $installed) <(printf "%s\n" $uptodate))
+    packages_for_update=$(comm -12 <(printf "%s\n" $installed_for_update) <(printf "%s\n" $available))
 fi
 
 if [ -z "$packages_for_update" ]; then
@@ -18,9 +26,13 @@ PKG="$(command -v dnf || command -v yum)"
 PKG_MGR="$(echo ${PKG:(-3)})"
 
 if [ $PKG_MGR == "dnf" ]; then
-    $PKG install -y dnf-plugins-core
+    if ! echo $installed | grep -qw dnf-plugins-core; then
+        $PKG install -y dnf-plugins-core
+    fi
 else:
-    $PKG install -y yum-plugin-priorities
+    if ! echo $installed | grep -qw yum-plugin-priorities; then
+        $PKG install -y yum-plugin-priorities
+    fi
 fi
 $PKG -y update $packages_for_update
 rm -rf /var/cache/$PKG_MGR