diff --git a/imap_filter/imap_filter.py b/imap_filter/imap_filter.py
index c9885a1..50839a6 100644
--- a/imap_filter/imap_filter.py
+++ b/imap_filter/imap_filter.py
@@ -183,7 +183,10 @@ class ImapFilter:
             sieve_script.write(content)
         if os.geteuid() == 0:
             os.chown(self.config['sieve_scripts_path'], owner, group)
-        os.chmod(self.config['sieve_scripts_path'], '0777')
+        os.chmod(
+            self.config['sieve_scripts_path'],
+            stat.S_IRUSR & stat.S_IWUSR & stat.S_IXUSR & stat.S_IRWXG & stat.S_IRGRP & stat.S_IWGRP & stat.S_IXGRP & stat.S_IRWXO & stat.S_IROTH & stat.S_IWOTH & stat.S_IXOTH
+            )
         return True
 
     def _process_message(self, message_id, data, mfilter):