diff --git a/pipenv/core.py b/pipenv/core.py
index fe80e0c1..e9d3ca29 100644
--- a/pipenv/core.py
+++ b/pipenv/core.py
@@ -1168,7 +1168,6 @@ def do_lock(verbose=False, system=False, clear=False, pre=False, keep_outdated=F
                 if not is_pinned(section[package_specified]):
                     lockfile[section_name][package_specified] = cached_lockfile[section_name][package_specified]
 
-
     # Overwrite any develop packages with default packages.
     for default_package in lockfile['default']:
         if default_package in lockfile['develop']: