diff --git a/dev-python/testtools/testtools-0.9.36.ebuild b/dev-python/testtools/testtools-0.9.36.ebuild
index ee13a7504ae08..eda26e6362d85 100644
--- a/dev-python/testtools/testtools-0.9.36.ebuild
+++ b/dev-python/testtools/testtools-0.9.36.ebuild
@@ -5,6 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python{2_7,3_3,3_4} pypy )
+PYTHON_REQ_USE="threads(+)"
 
 inherit distutils-r1 versionator
 
diff --git a/dev-python/testtools/testtools-1.2.1.ebuild b/dev-python/testtools/testtools-1.2.1.ebuild
index 9566116e0e287..2cd18e63ddad0 100644
--- a/dev-python/testtools/testtools-1.2.1.ebuild
+++ b/dev-python/testtools/testtools-1.2.1.ebuild
@@ -1,10 +1,11 @@
-# Copyright 1999-2014 Gentoo Foundation
+# Copyright 1999-2015 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 # $Id$
 
 EAPI=5
 
 PYTHON_COMPAT=( python{2_7,3_3,3_4} pypy )
+PYTHON_REQ_USE="threads(+)"
 
 inherit distutils-r1 versionator
 
diff --git a/dev-python/testtools/testtools-1.3.0.ebuild b/dev-python/testtools/testtools-1.3.0.ebuild
index 4bc6cd15da295..e2fb8ac3eaae5 100644
--- a/dev-python/testtools/testtools-1.3.0.ebuild
+++ b/dev-python/testtools/testtools-1.3.0.ebuild
@@ -1,10 +1,11 @@
-# Copyright 1999-2014 Gentoo Foundation
+# Copyright 1999-2015 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 # $Id$
 
 EAPI=5
 
 PYTHON_COMPAT=( python{2_7,3_3,3_4} pypy )
+PYTHON_REQ_USE="threads(+)"
 
 inherit distutils-r1 versionator
 
diff --git a/dev-python/testtools/testtools-1.5.0.ebuild b/dev-python/testtools/testtools-1.5.0.ebuild
index d9699642dbef0..0ddc1d63bcc0b 100644
--- a/dev-python/testtools/testtools-1.5.0.ebuild
+++ b/dev-python/testtools/testtools-1.5.0.ebuild
@@ -5,6 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python2_7 python3_{3,4,5} pypy pypy3 )
+PYTHON_REQ_USE="threads(+)"
 
 inherit distutils-r1
 
diff --git a/dev-python/testtools/testtools-1.7.1.ebuild b/dev-python/testtools/testtools-1.7.1.ebuild
index d4d3773005a17..8ffd592f86f4c 100644
--- a/dev-python/testtools/testtools-1.7.1.ebuild
+++ b/dev-python/testtools/testtools-1.7.1.ebuild
@@ -5,6 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python{2_7,3_3,3_4} pypy )
+PYTHON_REQ_USE="threads(+)"
 
 inherit distutils-r1
 
diff --git a/dev-python/testtools/testtools-1.8.0.ebuild b/dev-python/testtools/testtools-1.8.0.ebuild
index 61f80468c2dcb..b00dd8d2ce516 100644
--- a/dev-python/testtools/testtools-1.8.0.ebuild
+++ b/dev-python/testtools/testtools-1.8.0.ebuild
@@ -5,6 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python2_7 python3_{3,4,5} pypy pypy3 )
+PYTHON_REQ_USE="threads(+)"
 
 inherit distutils-r1