diff --git a/roles/matrix-bridge-mautrix-whatsapp/tasks/init.yml b/roles/matrix-bridge-mautrix-whatsapp/tasks/init.yml
index ab10a5303..d820437e5 100644
--- a/roles/matrix-bridge-mautrix-whatsapp/tasks/init.yml
+++ b/roles/matrix-bridge-mautrix-whatsapp/tasks/init.yml
@@ -3,8 +3,8 @@
     matrix_systemd_services_list: "{{ matrix_systemd_services_list + ['matrix-mautrix-whatsapp.service'] }}"
   when: matrix_mautrix_whatsapp_enabled | bool
 
-# If the matrix-synapse role is not used, these variables may not exist.
 - ansible.builtin.set_fact:
+    # If the matrix-synapse role is not used, these variables may not exist.
     matrix_synapse_container_extra_arguments: >
       {{
         matrix_synapse_container_extra_arguments | default([])
@@ -18,4 +18,19 @@
         +
         ["/matrix-mautrix-whatsapp-registration.yaml"]
       }}
-  when: matrix_mautrix_whatsapp_enabled | bool
+    # If the matrix-dendrite role is not used, these variables may not exist.
+    matrix_dendrite_container_extra_arguments: >
+      {{
+        matrix_dendrite_container_extra_arguments | default([])
+        +
+        ["--mount type=bind,src={{ matrix_mautrix_whatsapp_config_path }}/registration.yaml,dst=/matrix-mautrix-whatsapp-registration.yaml,ro"]
+      }}
+
+    matrix_dendrite_app_service_config_files: >
+      {{
+        matrix_dendrite_app_service_config_files | default([])
+        +
+        ["/matrix-mautrix-whatsapp-registration.yaml"]
+      }}
+
+  when: matrix_mautrix_whatsapp_enabled | bool
\ No newline at end of file