diff --git a/pipenv/vendor/requirementslib/models/lockfile.py b/pipenv/vendor/requirementslib/models/lockfile.py
index 5350de74..3eabc504 100644
--- a/pipenv/vendor/requirementslib/models/lockfile.py
+++ b/pipenv/vendor/requirementslib/models/lockfile.py
@@ -264,8 +264,6 @@ class Lockfile(object):
         """Produces a generator which generates requirements from the desired section.
 
         :param bool dev: Indicates whether to use dev requirements, defaults to False
-        :param bool only: When dev is True, indicates whether to use *only* dev
-                          requirements, defaults to False
         :return: Requirements from the relevant the relevant pipfile
         :rtype: :class:`~requirementslib.models.requirements.Requirement`
         """
diff --git a/pipenv/vendor/vistir/__init__.py b/pipenv/vendor/vistir/__init__.py
index 53c1dc43..1227629a 100644
--- a/pipenv/vendor/vistir/__init__.py
+++ b/pipenv/vendor/vistir/__init__.py
@@ -36,7 +36,7 @@ from .misc import (
 from .path import create_tracked_tempdir, create_tracked_tempfile, mkdir_p, rmtree
 from .spin import create_spinner
 
-__version__ = "0.5.1"
+__version__ = "0.5.2"
 
 
 __all__ = [
diff --git a/tasks/vendoring/patches/patched/piptools.patch b/tasks/vendoring/patches/patched/piptools.patch
index 4eea7808..1f0cca36 100644
--- a/tasks/vendoring/patches/patched/piptools.patch
+++ b/tasks/vendoring/patches/patched/piptools.patch
@@ -510,7 +510,7 @@ index ef5ba4e..b96acf6 100644
 +                map(lambda c: self._hash_cache.get_hash(c.link), matching_candidates)
 +                if h is not None
 +            }
-+         return result
++        return result
  
 -            # Iterate over the chosen context manager
 -            with context_manager as bar: