diff --git a/qurator/dinglehopper/ocr_files.py b/qurator/dinglehopper/ocr_files.py
index 2d88498..2ceebfd 100644
--- a/qurator/dinglehopper/ocr_files.py
+++ b/qurator/dinglehopper/ocr_files.py
@@ -16,7 +16,6 @@ import unicodedata
 class ExtractedText:
     segments = attr.ib()
     joiner = attr.ib(type=str)
-    # TODO Use type annotations for attr.ib types when support for Python 3.5 is dropped
     # TODO Types are not validated (attr does not do this yet)
 
     @property
diff --git a/qurator/dinglehopper/tests/test_integ_cli_valid_json.py b/qurator/dinglehopper/tests/test_integ_cli_valid_json.py
index 5699700..35421bb 100644
--- a/qurator/dinglehopper/tests/test_integ_cli_valid_json.py
+++ b/qurator/dinglehopper/tests/test_integ_cli_valid_json.py
@@ -10,7 +10,6 @@ from ..cli import process
 def test_cli_json(tmp_path):
     """Test that the cli/process() yields a loadable JSON report"""
 
-    # XXX Path.__str__() is necessary for Python 3.5
     with working_directory(str(tmp_path)):
         with open('gt.txt', 'w') as gtf:
             gtf.write('AAAAA')
@@ -26,7 +25,6 @@ def test_cli_json(tmp_path):
 def test_cli_json_cer_is_infinity(tmp_path):
     """Test that the cli/process() yields a loadable JSON report when CER == inf"""
 
-    # XXX Path.__str__() is necessary for Python 3.5
     with working_directory(str(tmp_path)):
         with open('gt.txt', 'w') as gtf:
             gtf.write('')  # Empty to yield CER == inf
diff --git a/qurator/dinglehopper/tests/test_integ_ocrd_cli.py b/qurator/dinglehopper/tests/test_integ_ocrd_cli.py
index 41da748..3d78f57 100644
--- a/qurator/dinglehopper/tests/test_integ_ocrd_cli.py
+++ b/qurator/dinglehopper/tests/test_integ_ocrd_cli.py
@@ -17,8 +17,6 @@ data_dir = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'data')
 def test_ocrd_cli(tmp_path):
     """Test OCR-D interface"""
 
-    # XXX Path.str() is necessary for Python 3.5
-
     # Copy test workspace
     test_workspace_dir_source = Path(data_dir) / 'actevedef_718448162'
     test_workspace_dir = tmp_path / 'test_ocrd_cli'