diff --git a/airbyte-integrations/connectors/source-marketo/source_marketo/source.py b/airbyte-integrations/connectors/source-marketo/source_marketo/source.py
index 2fd06f6d4b4e..ede53ffeb4b5 100644
--- a/airbyte-integrations/connectors/source-marketo/source_marketo/source.py
+++ b/airbyte-integrations/connectors/source-marketo/source_marketo/source.py
@@ -226,6 +226,7 @@ def parse_response(self, response: requests.Response, **kwargs) -> Iterable[Mapp
 
         default_prop = {"type": ["null", "string"]}
         schema = self.get_json_schema()["properties"]
+        response.encoding = "utf-8"
 
         reader = csv.DictReader(response.iter_lines(chunk_size=1024, decode_unicode=True))
         for record in reader:
diff --git a/docs/integrations/sources/marketo.md b/docs/integrations/sources/marketo.md
index 975162a7e229..8a8504d7fd12 100644
--- a/docs/integrations/sources/marketo.md
+++ b/docs/integrations/sources/marketo.md
@@ -107,6 +107,7 @@ If the 50,000 limit is too stringent, contact Marketo support for a quota increa
 | Version  | Date       | Pull Request                                             | Subject                                                                                       |
 |:---------|:-----------|:---------------------------------------------------------|:----------------------------------------------------------------------------------------------|
 | `1.0.0`  | 2023-01-25 | [21790](https://github.com/airbytehq/airbyte/pull/21790) | Fix `activities_*` stream schemas                                                             |
+| `0.1.12` | 2023-01-19 | [20973](https://github.com/airbytehq/airbyte/pull/20973) | Fix encoding error (note: this change is not in version 1.0.0, but is in later versions       |
 | `0.1.11` | 2022-09-30 | [17445](https://github.com/airbytehq/airbyte/pull/17445) | Do not use temporary files for memory optimization                                            |
 | `0.1.10` | 2022-09-30 | [17445](https://github.com/airbytehq/airbyte/pull/17445) | Optimize memory consumption                                                                   |
 | `0.1.9`  | 2022-09-28 | [17304](https://github.com/airbytehq/airbyte/pull/17304) | Migrate to per-stream sate.                                                                   |