diff --git a/scripts/install_deps.sh b/scripts/install_deps.sh
index 01aa8d0..f73bc3a 100755
--- a/scripts/install_deps.sh
+++ b/scripts/install_deps.sh
@@ -44,15 +44,15 @@ check_dependencies() {
     command -v resize2fs >/dev/null 2>&1 || NEED_INSTALL+=("e2fsprogs")
     command -v pip >/dev/null 2>&1 || NEED_INSTALL+=("python3-pip")
     command -v aria2c >/dev/null 2>&1 || NEED_INSTALL+=("aria2")
-    command -v 7z > /dev/null 2>&1 || NEED_INSTALL+=("p7zip-full")
-    command -v setfattr > /dev/null 2>&1 || NEED_INSTALL+=("attr")
-    command -v xz > /dev/null 2>&1 || NEED_INSTALL+=("xz-utils")
-    command -v unzip > /dev/null 2>&1 || NEED_INSTALL+=("unzip")
-    command -v qemu-img > /dev/null 2>&1 || NEED_INSTALL+=("qemu-utils")
+    command -v 7z >/dev/null 2>&1 || NEED_INSTALL+=("p7zip-full")
+    command -v setfattr >/dev/null 2>&1 || NEED_INSTALL+=("attr")
+    command -v xz >/dev/null 2>&1 || NEED_INSTALL+=("xz-utils")
+    command -v unzip >/dev/null 2>&1 || NEED_INSTALL+=("unzip")
+    command -v qemu-img >/dev/null 2>&1 || NEED_INSTALL+=("qemu-utils")
 }
 check_dependencies
-osrel=$(sed -n '/^ID_LIKE=/s/^.*=//p' /etc/os-release);
-declare -A os_pm_install;
+osrel=$(sed -n '/^ID_LIKE=/s/^.*=//p' /etc/os-release)
+declare -A os_pm_install
 # os_pm_install["/etc/redhat-release"]=yum
 # os_pm_install["/etc/arch-release"]=pacman
 # os_pm_install["/etc/gentoo-release"]=emerge
@@ -60,7 +60,7 @@ os_pm_install["/etc/SuSE-release"]=zypper
 os_pm_install["/etc/debian_version"]=apt-get
 # os_pm_install["/etc/alpine-release"]=apk
 
-declare -A PM_UPDATE_MAP;
+declare -A PM_UPDATE_MAP
 PM_UPDATE_MAP["yum"]="check-update"
 PM_UPDATE_MAP["pacman"]="-Syu --noconfirm"
 PM_UPDATE_MAP["emerge"]="-auDN @world"
@@ -68,7 +68,7 @@ PM_UPDATE_MAP["zypper"]="ref"
 PM_UPDATE_MAP["apt-get"]="update"
 PM_UPDATE_MAP["apk"]="update"
 
-declare -A PM_INSTALL_MAP;
+declare -A PM_INSTALL_MAP
 PM_INSTALL_MAP["yum"]="install -y"
 PM_INSTALL_MAP["pacman"]="-S --noconfirm --needed"
 PM_INSTALL_MAP["emerge"]="-a"
@@ -76,6 +76,10 @@ PM_INSTALL_MAP["zypper"]="in -y"
 PM_INSTALL_MAP["apt-get"]="install -y"
 PM_INSTALL_MAP["apk"]="add"
 
+declare -A PM_UPGRADE_MAP
+PM_UPGRADE_MAP["apt-get"]="upgrade -y"
+PM_UPGRADE_MAP["zypper"]="up -y"
+
 check_package_manager() {
     for f in "${!os_pm_install[@]}"; do
         if [[ -f $f ]]; then
@@ -87,12 +91,17 @@ check_package_manager() {
         PM="zypper"
     fi
     if [ -n "$PM" ]; then
-        readarray -td ' ' UPDATE_OPTION <<<"${PM_UPDATE_MAP[$PM]} "; unset 'UPDATE_OPTION[-1]';
-        readarray -td ' ' INSTALL_OPTION <<<"${PM_INSTALL_MAP[$PM]} "; unset 'INSTALL_OPTION[-1]';
+        readarray -td ' ' UPDATE_OPTION <<<"${PM_UPDATE_MAP[$PM]} "
+        unset 'UPDATE_OPTION[-1]'
+        readarray -td ' ' INSTALL_OPTION <<<"${PM_INSTALL_MAP[$PM]} "
+        unset 'INSTALL_OPTION[-1]'
+        readarray -td ' ' UPGRADE_OPTION <<<"${PM_UPGRADE_MAP[$PM]} "
+        unset 'UPGRADE_OPTION[-1]'
     fi
 }
 
 check_package_manager
+require_su
 if [ -n "${NEED_INSTALL[*]}" ]; then
     if [ -z "$PM" ]; then
         echo "Unable to determine package manager: Unsupported distros"
@@ -105,15 +114,17 @@ if [ -n "${NEED_INSTALL[*]}" ]; then
                 NEED_INSTALL_FIX=${NEED_INSTALL_FIX//whiptail/dialog} 2>&1
                 NEED_INSTALL_FIX=${NEED_INSTALL_FIX//xz-utils/xz} 2>&1
                 NEED_INSTALL_FIX=${NEED_INSTALL_FIX//qemu-utils/qemu-tools} 2>&1
-            }  >> /dev/null
+            } >>/dev/null
 
-            readarray -td ' ' NEED_INSTALL <<<"$NEED_INSTALL_FIX "; unset 'NEED_INSTALL[-1]';
+            readarray -td ' ' NEED_INSTALL <<<"$NEED_INSTALL_FIX "
+            unset 'NEED_INSTALL[-1]'
         elif [ "$PM" = "apk" ]; then
             NEED_INSTALL_FIX=${NEED_INSTALL[*]}
-            readarray -td ' ' NEED_INSTALL <<<"${NEED_INSTALL_FIX//p7zip-full/p7zip} "; unset 'NEED_INSTALL[-1]';
+            readarray -td ' ' NEED_INSTALL <<<"${NEED_INSTALL_FIX//p7zip-full/p7zip} "
+            unset 'NEED_INSTALL[-1]'
         fi
-        require_su
-        if ! ($SUDO "$PM" "${UPDATE_OPTION[@]}" && $SUDO "$PM" "${INSTALL_OPTION[@]}" "${NEED_INSTALL[@]}") then abort; fi
+        if ! ($SUDO "$PM" "${INSTALL_OPTION[@]}" "${NEED_INSTALL[@]}"); then abort; fi
     fi
 fi
+if ! ($SUDO "$PM" "${UPDATE_OPTION[@]}" && $SUDO "$PM" "${UPGRADE_OPTION[@]}" ca-certificates); then abort; fi
 python3 -m pip install -r requirements.txt -q