diff --git a/.env.sample b/.env.sample
index d33f855..28ae38e 100644
--- a/.env.sample
+++ b/.env.sample
@@ -4,3 +4,4 @@ LETS_ENCRYPT_ENV=production
NEXTCLOUD_DOMAIN=nextcloud.example.com
ADMIN_USERNAME=admin
SECRET_ADMIN_PASSWORD_VERSION=v1
+FRAME_ANCESTORS=
diff --git a/abra.sh b/abra.sh
index b44d613..895aa1e 100644
--- a/abra.sh
+++ b/abra.sh
@@ -1,2 +1,2 @@
export NGINX_CONF_VERSION=v2
-export COOLWSD_XML_VERSION=v1
+export COOLWSD_XML_VERSION=v2
diff --git a/compose.yml b/compose.yml
index 03306f1..114955f 100644
--- a/compose.yml
+++ b/compose.yml
@@ -39,6 +39,7 @@ services:
- DOMAIN=${DOMAIN}
- DONT_GEN_SSL_CERT=true
- NEXTCLOUD_DOMAIN=${NEXTCLOUD_DOMAIN}
+ - FRAME_ANCESTORS
networks:
- internal
deploy:
diff --git a/coolwsd.xml.tmpl b/coolwsd.xml.tmpl
index 2e2e3e4..3f5fad0 100644
--- a/coolwsd.xml.tmpl
+++ b/coolwsd.xml.tmpl
@@ -125,7 +125,7 @@
10\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}
::ffff:10\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}
-
+ {{ env "FRAME_ANCESTORS" }}