diff --git a/cps/constants.py b/cps/constants.py
index 0f03364ac..bd7282434 100644
--- a/cps/constants.py
+++ b/cps/constants.py
@@ -173,7 +173,6 @@ BookMeta = namedtuple('BookMeta', 'file_path, extension, title, author, cover, d
 
 # python build process likes to have x.y.zbw -> b for beta and w a counting number
 STABLE_VERSION =  '0.6.24b'
-# _version = STABLE_VERSION['version']
 
 NIGHTLY_VERSION = dict()
 NIGHTLY_VERSION[0] = '$Format:%H$'
diff --git a/cps/cw_advocate/api.py b/cps/cw_advocate/api.py
index c9ed5f589..5a5ac2039 100644
--- a/cps/cw_advocate/api.py
+++ b/cps/cw_advocate/api.py
@@ -113,7 +113,7 @@ def get(url, **kwargs):
     """Sends a GET request.
 
     :param url: URL for the new :class:`Request` object.
-    :param \*\*kwargs: Optional arguments that ``request`` takes.
+    :param **kwargs: Optional arguments that ``request`` takes.
     :return: :class:`Response <Response>` object
     :rtype: requests.Response
     """
@@ -122,84 +122,6 @@ def get(url, **kwargs):
     return request('get', url, **kwargs)
 
 
-'''def options(url, **kwargs):
-    """Sends a OPTIONS request.
-
-    :param url: URL for the new :class:`Request` object.
-    :param \*\*kwargs: Optional arguments that ``request`` takes.
-    :return: :class:`Response <Response>` object
-    :rtype: requests.Response
-    """
-
-    kwargs.setdefault('allow_redirects', True)
-    return request('options', url, **kwargs)
-
-
-def head(url, **kwargs):
-    """Sends a HEAD request.
-
-    :param url: URL for the new :class:`Request` object.
-    :param \*\*kwargs: Optional arguments that ``request`` takes.
-    :return: :class:`Response <Response>` object
-    :rtype: requests.Response
-    """
-
-    kwargs.setdefault('allow_redirects', False)
-    return request('head', url, **kwargs)
-
-
-def post(url, data=None, json=None, **kwargs):
-    """Sends a POST request.
-
-    :param url: URL for the new :class:`Request` object.
-    :param data: (optional) Dictionary, bytes, or file-like object to send in the body of the :class:`Request`.
-    :param json: (optional) json data to send in the body of the :class:`Request`.
-    :param \*\*kwargs: Optional arguments that ``request`` takes.
-    :return: :class:`Response <Response>` object
-    :rtype: requests.Response
-    """
-
-    return request('post', url, data=data, json=json, **kwargs)
-
-
-def put(url, data=None, **kwargs):
-    """Sends a PUT request.
-
-    :param url: URL for the new :class:`Request` object.
-    :param data: (optional) Dictionary, bytes, or file-like object to send in the body of the :class:`Request`.
-    :param \*\*kwargs: Optional arguments that ``request`` takes.
-    :return: :class:`Response <Response>` object
-    :rtype: requests.Response
-    """
-
-    return request('put', url, data=data, **kwargs)
-
-
-def patch(url, data=None, **kwargs):
-    """Sends a PATCH request.
-
-    :param url: URL for the new :class:`Request` object.
-    :param data: (optional) Dictionary, bytes, or file-like object to send in the body of the :class:`Request`.
-    :param \*\*kwargs: Optional arguments that ``request`` takes.
-    :return: :class:`Response <Response>` object
-    :rtype: requests.Response
-    """
-
-    return request('patch', url, data=data, **kwargs)
-
-
-def delete(url, **kwargs):
-    """Sends a DELETE request.
-
-    :param url: URL for the new :class:`Request` object.
-    :param \*\*kwargs: Optional arguments that ``request`` takes.
-    :return: :class:`Response <Response>` object
-    :rtype: requests.Response
-    """
-
-    return request('delete', url, **kwargs)'''
-
-
 class RequestsAPIWrapper:
     """Provides a `requests.api`-like interface with a specific validator"""
 
diff --git a/requirements.txt b/requirements.txt
index bbe3b35bf..2b4d136e1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ Babel>=1.3,<3.0
 Flask-Babel>=0.11.1,<4.1.0
 Flask-Principal>=0.3.2,<0.5.1
 Flask>=1.0.2,<3.1.0
-iso-639>=0.4.5<0.5.0;python_version<'3.12'
+iso-639>=0.4.5,<0.5.0;python_version<'3.12'
 pycountry>=20.0.0,<25.0.0;python_version>='3.12'
 PyPDF>=3.15.6,<5.1.0
 pytz>=2016.10