diff --git a/dev-python/hypothesis/hypothesis-1.12.0.ebuild b/dev-python/hypothesis/hypothesis-1.12.0.ebuild
index 28cd1040b2b9e..0f04fa8a34fe3 100644
--- a/dev-python/hypothesis/hypothesis-1.12.0.ebuild
+++ b/dev-python/hypothesis/hypothesis-1.12.0.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/hypothesis/hypothesis-1.14.0.ebuild b/dev-python/hypothesis/hypothesis-1.14.0.ebuild
index f65d7fd3072ee..e8c2f1d8e80f5 100644
--- a/dev-python/hypothesis/hypothesis-1.14.0.ebuild
+++ b/dev-python/hypothesis/hypothesis-1.14.0.ebuild
@@ -5,6 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python2_7 python3_{3,4,5} pypy pypy3 )
+PYTHON_REQ_USE="threads(+)"
 
 inherit distutils-r1