diff --git a/cyclonedx_py/client.py b/cyclonedx_py/client.py
index cc8031ea..908f5fe8 100644
--- a/cyclonedx_py/client.py
+++ b/cyclonedx_py/client.py
@@ -273,10 +273,10 @@ def _get_input_parser(self) -> BaseParser:
                         'When using input from Conda JSON, you need to pipe input via STDIN')
                 elif self._arguments.input_from_pip:
                     self._arguments.input_source = open(os.path.join(current_directory, 'Pipfile.lock'),
-                                                        'rt', encoding="UTF-8")
+                                                        'rt', encoding="UTF-8", errors='replace')
                 elif self._arguments.input_from_poetry:
                     self._arguments.input_source = open(os.path.join(current_directory, 'poetry.lock'),
-                                                        'rt', encoding="UTF-8")
+                                                        'rt', encoding="UTF-8", errors='replace')
                 elif self._arguments.input_from_requirements:
                     self._arguments.input_source = open(os.path.join(current_directory, 'requirements.txt'), 'rb')
                 else:
@@ -297,7 +297,7 @@ def _get_input_parser(self) -> BaseParser:
                     input_data = input_data.decode(input_encoding)
                 except ValueError:
                     # last resort: try utf8 and hope for the best
-                    input_data = input_data.decode('utf-8', 'backslashreplace')
+                    input_data = input_data.decode('utf-8', 'replace')
             input_data_fh.close()
 
         if self._arguments.input_from_conda_explicit:
diff --git a/cyclonedx_py/parser/pipenv.py b/cyclonedx_py/parser/pipenv.py
index 5c614c17..191df678 100644
--- a/cyclonedx_py/parser/pipenv.py
+++ b/cyclonedx_py/parser/pipenv.py
@@ -73,7 +73,7 @@ def __init__(
             debug_message: DebugMessageCallback = quiet
     ) -> None:
         debug_message('open file: {}', pipenv_lock_filename)
-        with open(pipenv_lock_filename) as plf:
+        with open(pipenv_lock_filename, encoding="UTF-8", errors='replace') as plf:
             super(PipEnvFileParser, self).__init__(
                 pipenv_contents=plf.read(), use_purl_bom_ref=use_purl_bom_ref,
                 debug_message=debug_message
diff --git a/cyclonedx_py/parser/poetry.py b/cyclonedx_py/parser/poetry.py
index 1157cd48..04b7df64 100644
--- a/cyclonedx_py/parser/poetry.py
+++ b/cyclonedx_py/parser/poetry.py
@@ -87,7 +87,7 @@ def __init__(
             debug_message: DebugMessageCallback = quiet
     ) -> None:
         debug_message('open file: {}', poetry_lock_filename)
-        with open(poetry_lock_filename, errors='backslashreplace') as plf:
+        with open(poetry_lock_filename, encoding="UTF-8", errors='replace') as plf:
             super(PoetryFileParser, self).__init__(
                 poetry_lock_contents=plf.read(), use_purl_bom_ref=use_purl_bom_ref,
                 debug_message=debug_message