diff --git a/debian/postinst b/debian/postinst
index 0f6296c3..c4328dfe 100755
--- a/debian/postinst
+++ b/debian/postinst
@@ -120,6 +120,13 @@ case "$1" in
 	fi
     done
 
+    # FIXME: remove after beta is over and add hunk to actively remove the repo
+    BETA_SOURCES="/etc/apt/sources.list.d/pvetest-for-beta.list"
+    if ! test -f "$BETA_SOURCES"; then
+	echo "Adding pvetest repo to '$BETA_SOURCES' to enable updates during Proxmox VE 7.0 beta"
+	echo "deb http://download.proxmox.com/debian/pve bullseye pvetest" | tee "$BETA_SOURCES"
+    fi
+
     # FIXME: remove in PVE 8.0
     if test ! -e /proxmox_install_mode && test -n "$2" && dpkg --compare-versions "$2" 'lt' '7~'; then
 	# PVE 4.0 beta to 5.4 ISO had a bug and did not generated a unique machine-id. below is a