1 files changed, 4 insertions, 0 deletions

diff --git a/bitbake/lib/bb/fetch2/npmsw.py b/bitbake/lib/bb/fetch2/npmsw.py
index 9523cece1a..426a139653 100644
--- a/bitbake/lib/bb/fetch2/npmsw.py
+++ b/bitbake/lib/bb/fetch2/npmsw.py
@@ -30,6 +30,8 @@ from bb.fetch2.npm import npm_integrity
 from bb.fetch2.npm import npm_localfile
 from bb.fetch2.npm import npm_unpack
 from bb.utils import is_semver
+from bb.utils import lockfile
+from bb.utils import unlockfile
 
 def foreach_dependencies(shrinkwrap, callback=None, dev=False):
     """
@@ -195,7 +197,9 @@ class NpmShrinkWrap(FetchMethod):
             proxy_ud = ud.proxy.ud[proxy_url]
             proxy_d = ud.proxy.d
             proxy_ud.setup_localpath(proxy_d)
+            lf = lockfile(proxy_ud.lockfile)
             returns.append(handle(proxy_ud.method, proxy_ud, proxy_d))
+            unlockfile(lf)
         return returns
 
     def verify_donestamp(self, ud, d):