diff --git a/src/lib/utils.py b/src/lib/utils.py
index cf2cf931..3c95ca34 100644
--- a/src/lib/utils.py
+++ b/src/lib/utils.py
@@ -552,7 +552,7 @@ def dump_manifest(contents: t.Dict, manifest_path: t.Union[Path, str]):
     if "max_line_length" in conf:
         try:
             max_line_length = int(conf.get("max_line_length"))
-            _yaml.width = max_line_length
+            _yaml.width = max_line_length # type: ignore # See https://sourceforge.net/p/ruamel-yaml/tickets/322/
         except ValueError:
             log.error("max_line_length EditorConfig variable is not valid")