diff --git a/pdoc/__init__.py b/pdoc/__init__.py
index 0f4e2c67..d2743e8e 100644
--- a/pdoc/__init__.py
+++ b/pdoc/__init__.py
@@ -268,7 +268,7 @@ def _pep224_docstrings(doc_obj: Union['Module', 'Class'], *,
             # before using cleaned doc_obj.source
             _ = inspect.findsource(doc_obj.obj)
             tree = ast.parse(doc_obj.source)
-        except (OSError, TypeError, SyntaxError) as exc:
+        except (OSError, TypeError, SyntaxError, UnicodeDecodeError) as exc:
             # Don't emit a warning for builtins that don't have source available
             is_builtin = getattr(doc_obj.obj, '__module__', None) == 'builtins'
             if not is_builtin: