diff --git a/dev-python/numpy/numpy-1.10.1-r1.ebuild b/dev-python/numpy/numpy-1.10.1-r1.ebuild
index 91cea129f63ca..c8e9cf93e4af4 100644
--- a/dev-python/numpy/numpy-1.10.1-r1.ebuild
+++ b/dev-python/numpy/numpy-1.10.1-r1.ebuild
@@ -5,6 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python2_7 python3_{3,4,5} )
+PYTHON_REQ_USE="threads(+)"
 
 FORTRAN_NEEDED=lapack
 
diff --git a/dev-python/numpy/numpy-1.8.2.ebuild b/dev-python/numpy/numpy-1.8.2.ebuild
index 3ca3e504c427e..80dce73022e2b 100644
--- a/dev-python/numpy/numpy-1.8.2.ebuild
+++ b/dev-python/numpy/numpy-1.8.2.ebuild
@@ -5,6 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python{2_7,3_3,3_4} )
+PYTHON_REQ_USE="threads(+)"
 
 FORTRAN_NEEDED=lapack
 
diff --git a/dev-python/numpy/numpy-1.9.2.ebuild b/dev-python/numpy/numpy-1.9.2.ebuild
index c8b50a78d98cc..34feea1ec9fe4 100644
--- a/dev-python/numpy/numpy-1.9.2.ebuild
+++ b/dev-python/numpy/numpy-1.9.2.ebuild
@@ -5,6 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python2_7 python3_{3,4} )
+PYTHON_REQ_USE="threads(+)"
 
 FORTRAN_NEEDED=lapack
 
diff --git a/dev-python/numpy/numpy-1.9.3.ebuild b/dev-python/numpy/numpy-1.9.3.ebuild
index 187f98b1e542d..11d1e8e46c2d7 100644
--- a/dev-python/numpy/numpy-1.9.3.ebuild
+++ b/dev-python/numpy/numpy-1.9.3.ebuild
@@ -5,6 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python2_7 python3_{3,4} )
+PYTHON_REQ_USE="threads(+)"
 
 FORTRAN_NEEDED=lapack