diff --git a/dev-python/pip/pip-1.5.6.ebuild b/dev-python/pip/pip-1.5.6.ebuild
index 6e787d1598604..d0560d95e4053 100644
--- a/dev-python/pip/pip-1.5.6.ebuild
+++ b/dev-python/pip/pip-1.5.6.ebuild
@@ -4,6 +4,7 @@
 
 EAPI=5
 PYTHON_COMPAT=( python{2_7,3_3,3_4} pypy pypy3  )
+PYTHON_REQ_USE="threads(+)"
 
 inherit bash-completion-r1 distutils-r1
 
diff --git a/dev-python/pip/pip-7.1.0.ebuild b/dev-python/pip/pip-7.1.0.ebuild
index 95d1c03af4287..3af6fa041e162 100644
--- a/dev-python/pip/pip-7.1.0.ebuild
+++ b/dev-python/pip/pip-7.1.0.ebuild
@@ -5,6 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python2_7 python3_{3,4} pypy pypy3 )
+PYTHON_REQ_USE="threads(+)"
 
 inherit bash-completion-r1 distutils-r1
 
diff --git a/dev-python/pip/pip-7.1.2.ebuild b/dev-python/pip/pip-7.1.2.ebuild
index 0b04a7136e770..1704e82a88d03 100644
--- a/dev-python/pip/pip-7.1.2.ebuild
+++ b/dev-python/pip/pip-7.1.2.ebuild
@@ -5,6 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python2_7 python3_{3,4,5} pypy pypy3 )
+PYTHON_REQ_USE="threads(+)"
 
 inherit bash-completion-r1 distutils-r1