--- a/test/test_indexer.py	Sun Mar 31 00:51:45 2024 -0400
+++ b/test/test_indexer.py	Sun Mar 31 01:44:48 2024 -0400
@@ -339,14 +339,17 @@
         # mangle things so we can test AssertionError at end
         # get_indexer()
         from roundup.configuration import IndexerOption
-        IndexerOption.allowed.append("unrecognized_indexer")
+        io_orig = IndexerOption.allowed
+        io = list(io_orig)
+        io.append("unrecognized_indexer")
+        IndexerOption.allowed = tuple(io)
         self.db.config['INDEXER'] = "unrecognized_indexer"
 
         with self.assertRaises(AssertionError) as cm:
             indexer = get_indexer(self.db.config, self.db)
 
         # unmangle state
-        IndexerOption.allowed.pop()
+        IndexerOption.allowed = io_orig
         self.assertNotIn("unrecognized_indexer", IndexerOption.allowed)
         self.db.config['INDEXER'] = ""
 
@@ -580,7 +583,10 @@
         import psycopg2
 
         from roundup.configuration import IndexerOption
-        IndexerOption.valid_langs.append("foo")
+        io_orig = IndexerOption.valid_langs
+
+        io = list(io_orig)
+        io.append("foo")
         self.db.config["INDEXER_LANGUAGE"] = "foo"
 
         with self.assertRaises(psycopg2.errors.UndefinedObject) as ctx:
@@ -596,6 +602,7 @@
         self.db.rollback()
 
         self.db.config["INDEXER_LANGUAGE"] = "english"
+        IndexerOption.valid_langs = io_orig
 
     def testNullChar(self):
        """Test with null char in string. Postgres FTS throws a ValueError