diff --git a/pip b/pip
index b6ab5aa..15515a2 160000
--- a/pip
+++ b/pip
@@ -1 +1 @@
-Subproject commit b6ab5aa202513357caa27dd596a04eb5458fc3c9
+Subproject commit 15515a29544014cf5fe8c07e7e14d5fcafc1ca78