diff --git a/inventories/vagrant/host_vars/backend/collabora.yml b/inventories/vagrant/host_vars/backend/collabora.yml
index 29bae6e..88caab8 100644
--- a/inventories/vagrant/host_vars/backend/collabora.yml
+++ b/inventories/vagrant/host_vars/backend/collabora.yml
@@ -1,6 +1,15 @@
 collabora_domain: "office.local.test"
+collabora_ssl_verification: false
 
 # Allowed WOPI host domains
 collabora_allowed_domains:
   - "nextcloud.local.test"
-  - "opencloud.local.test"
\ No newline at end of file
+  - "wopi.opencloud.local.test"
+
+# Domains allowed to embed Collabora in an iframe
+collabora_frame_ancestors:
+  - "nextcloud.local.test"
+  - "opencloud.local.test"
+
+collabora_extra_hosts:
+  - "wopi.opencloud.local.test:host-gateway"
\ No newline at end of file
diff --git a/inventories/vagrant/host_vars/backend/opencloud.yml b/inventories/vagrant/host_vars/backend/opencloud.yml
index 627e601..5656f4d 100644
--- a/inventories/vagrant/host_vars/backend/opencloud.yml
+++ b/inventories/vagrant/host_vars/backend/opencloud.yml
@@ -4,6 +4,7 @@ opencloud_extra_hosts:
   - "opencloud.local.test:host-gateway"
   - "keycloak.local.test:host-gateway"
   - "storage.local.test:192.168.56.11"
+  - "office.local.test:host-gateway"
 
 # OIDC configuration (Keycloak)
 opencloud_oidc_issuer: "https://keycloak.local.test/realms/vagrant"
@@ -18,6 +19,10 @@ opencloud_s3_access_key: "{{ lookup('digitalboard.core.garage_credentials', 'ope
 opencloud_s3_secret_key: "{{ lookup('digitalboard.core.garage_credentials', 'opencloud', host='backend')['secret_key'] }}"
 opencloud_s3_bucket: "opencloud"
 
+# Collabora integration
+opencloud_collabora_domain: "office.local.test"
+opencloud_wopi_domain: "wopi.opencloud.local.test"
+
 # Allow OpenCloud to connect to Keycloak for OIDC discovery
 opencloud_csp_extra_connect_src:
   - "https://keycloak.local.test/"
\ No newline at end of file