diff --git a/templates/scripts/includes/deployment.sh b/templates/scripts/includes/deployment.sh
index 8ec28c4..973f0cc 100755
--- a/templates/scripts/includes/deployment.sh
+++ b/templates/scripts/includes/deployment.sh
@@ -88,8 +88,8 @@ VLAN_SIP_INT=1720
 VLAN_HA_INT=1721
 VLAN_RTP_EXT=1722
 VIRTUALBOX_DIR="/usr/share/virtualbox"
-VIRTUALBOX_ISO="VBoxGuestAdditions_5.2.18.iso"
-VIRTUALBOX_ISO_CHECKSUM="f98b6ad7093ee0b27d26dea565b197a5f33fdac93c4b67e73824ce889d6c964c" # sha256
+VIRTUALBOX_ISO="VBoxGuestAdditions_5.2.26.iso"
+VIRTUALBOX_ISO_CHECKSUM="b927c5d0d4c97a9da2522daad41fe96b616ed06bfb0c883f9c42aad2244f7c38" # sha256
 VIRTUALBOX_ISO_URL_PATH="/files/${VIRTUALBOX_ISO}"
 SIPWISE_APT_KEY_CHECKSUM="f4cdbe4994ae8ca6c4b24eb164e82a20579b335da4eca0907ecaace832e9a0a7" # sha256
 SIPWISE_APT_KEY_PATH="/etc/apt/trusted.gpg.d/sipwise.gpg"