diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1a4d4d82..8068bde6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,12 +2,16 @@
 
 All notable changes to this project will be documented in this file.
 
-## [0.11.0 - 2024-0x-xx]
+## [0.11.0 - 2024-02-17]
 
 ### Added
 
 - Files: `lock` and `unlock` methods, lock file information to `FsNode`. #227
 
+### Fixed
+
+- NextcloudApp: `MachineTranslation` provider registration - added optional `actionDetectLang` param. #229
+
 ## [0.10.0 - 2024-02-14]
 
 ### Added
diff --git a/nc_py_api/ex_app/providers/translations.py b/nc_py_api/ex_app/providers/translations.py
index b8d11522..5b3b798f 100644
--- a/nc_py_api/ex_app/providers/translations.py
+++ b/nc_py_api/ex_app/providers/translations.py
@@ -42,6 +42,11 @@ def action_handler(self) -> str:
         """Relative ExApp url which will be called by Nextcloud."""
         return self._raw_data["action_handler"]
 
+    @property
+    def action_handler_detect_lang(self) -> str:
+        """Relative ExApp url which will be called by Nextcloud to detect language."""
+        return self._raw_data.get("action_detect_lang", "")
+
     def __repr__(self):
         return f"<{self.__class__.__name__} name={self.name}, handler={self.action_handler}>"
 
@@ -59,6 +64,7 @@ def register(
         callback_url: str,
         from_languages: dict[str, str],
         to_languages: dict[str, str],
+        detect_lang_callback_url: str = "",
     ) -> None:
         """Registers or edit the Translations provider."""
         require_capabilities("app_api", self._session.capabilities)
@@ -68,6 +74,7 @@ def register(
             "fromLanguages": from_languages,
             "toLanguages": to_languages,
             "actionHandler": callback_url,
+            "actionDetectLang": detect_lang_callback_url,
         }
         self._session.ocs("POST", f"{self._session.ae_url}/{_EP_SUFFIX}", json=params)
 
@@ -114,6 +121,7 @@ async def register(
         callback_url: str,
         from_languages: dict[str, str],
         to_languages: dict[str, str],
+        detect_lang_callback_url: str = "",
     ) -> None:
         """Registers or edit the Translations provider."""
         require_capabilities("app_api", await self._session.capabilities)
@@ -123,6 +131,7 @@ async def register(
             "fromLanguages": from_languages,
             "toLanguages": to_languages,
             "actionHandler": callback_url,
+            "actionDetectLang": detect_lang_callback_url,
         }
         await self._session.ocs("POST", f"{self._session.ae_url}/{_EP_SUFFIX}", json=params)
 
diff --git a/tests/actual_tests/translation_provider_test.py b/tests/actual_tests/translation_provider_test.py
index 4693d921..85cdba07 100644
--- a/tests/actual_tests/translation_provider_test.py
+++ b/tests/actual_tests/translation_provider_test.py
@@ -21,12 +21,14 @@ def test_translation_provider(nc_app):
     assert result.action_handler == "some_url"
     assert result.from_languages == FROM_LANG1
     assert result.to_languages == TO_LANG1
+    assert result.action_handler_detect_lang == ""
     nc_app.providers.translations.register(
         "test_id2",
         "Test #2 Prov",
         "some_url2",
         {"pl_PL": "Polish"},
         {"tr_TR": "Turkish"},
+        "/detect_lang",
     )
     result2 = nc_app.providers.translations.get_entry("test_id2")
     assert result2.name == "test_id2"
@@ -34,6 +36,7 @@ def test_translation_provider(nc_app):
     assert result2.action_handler == "some_url2"
     assert result2.from_languages == {"pl_PL": "Polish"}
     assert result2.to_languages == {"tr_TR": "Turkish"}
+    assert result2.action_handler_detect_lang == "detect_lang"
     nc_app.providers.translations.register(
         "test_id",
         "Renamed",
@@ -72,12 +75,14 @@ async def test_translation_async(anc_app):
     assert result.action_handler == "some_url"
     assert result.from_languages == FROM_LANG1
     assert result.to_languages == TO_LANG1
+    assert result.action_handler_detect_lang == ""
     await anc_app.providers.translations.register(
         "test_id2",
         "Test #2 Prov",
         "some_url2",
         {"pl_PL": "Polish"},
         {"tr_TR": "Turkish"},
+        "/detect_lang",
     )
     result2 = await anc_app.providers.translations.get_entry("test_id2")
     assert result2.name == "test_id2"
@@ -85,6 +90,7 @@ async def test_translation_async(anc_app):
     assert result2.action_handler == "some_url2"
     assert result2.from_languages == {"pl_PL": "Polish"}
     assert result2.to_languages == {"tr_TR": "Turkish"}
+    assert result2.action_handler_detect_lang == "detect_lang"
     await anc_app.providers.translations.register(
         "test_id",
         "Renamed",