diff --git a/actions/matrixsynapse b/actions/matrixsynapse
index 5d578498a..dac7ba6fb 100755
--- a/actions/matrixsynapse
+++ b/actions/matrixsynapse
@@ -56,7 +56,8 @@ def subcommand_post_install(_):
 
     for listener in config['listeners']:
         if listener['port'] == 8448:
-            listener['bind_address'] = '0.0.0.0'
+            listener['bind_addresses'] = ['::1', '0.0.0.0']
+            listener.pop('bind_address', None)
 
     # Setup ldap parameters
     config['password_providers'] = [{}]
diff --git a/plinth/modules/matrixsynapse/__init__.py b/plinth/modules/matrixsynapse/__init__.py
index 8ce2c3dfe..f008252d8 100644
--- a/plinth/modules/matrixsynapse/__init__.py
+++ b/plinth/modules/matrixsynapse/__init__.py
@@ -31,7 +31,7 @@ from plinth.menu import main_menu
 
 from .manifest import backup, clients
 
-version = 2
+version = 3
 
 managed_services = ['matrix-synapse']