diff --git a/plinth/modules/apache/__init__.py b/plinth/modules/apache/__init__.py
index c64793f21..62dd6cc3c 100644
--- a/plinth/modules/apache/__init__.py
+++ b/plinth/modules/apache/__init__.py
@@ -86,7 +86,7 @@ class ApacheApp(app_module.App):
 
     app_id = 'apache'
 
-    _version = 15
+    _version = 16
 
     def __init__(self) -> None:
         """Create components for the app."""
diff --git a/plinth/modules/apache/privileged.py b/plinth/modules/apache/privileged.py
index 880757d89..de46375f4 100644
--- a/plinth/modules/apache/privileged.py
+++ b/plinth/modules/apache/privileged.py
@@ -128,7 +128,7 @@ def setup(old_version: int):
         # Various modules for authentication/authorization
         webserver.enable('auth_openidc', kind='module')
         webserver.enable('authnz_ldap', kind='module')
-        webserver.enable('auth_pubtkt', kind='module')
+        webserver.disable('auth_pubtkt', kind='module')
 
         # enable some critical modules to avoid restart while installing
         # FreedomBox applications.