diff --git a/dev-python/rdflib/rdflib-3.2.3-r1.ebuild b/dev-python/rdflib/rdflib-3.2.3-r1.ebuild
index 1a4e73004f538..598501469d125 100644
--- a/dev-python/rdflib/rdflib-3.2.3-r1.ebuild
+++ b/dev-python/rdflib/rdflib-3.2.3-r1.ebuild
@@ -5,7 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python{2_7,3_3} )
-PYTHON_REQ_USE="sqlite?"
+PYTHON_REQ_USE="sqlite?,threads(+)"
 
 inherit distutils-r1
 
diff --git a/dev-python/rdflib/rdflib-4.1.2.ebuild b/dev-python/rdflib/rdflib-4.1.2.ebuild
index 1a24551a2c4bf..65cd9c0c43ed8 100644
--- a/dev-python/rdflib/rdflib-4.1.2.ebuild
+++ b/dev-python/rdflib/rdflib-4.1.2.ebuild
@@ -5,7 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python{2_7,3_3,3_4} )
-PYTHON_REQ_USE="sqlite?"
+PYTHON_REQ_USE="sqlite?,threads(+)"
 # The usual required for tests
 DISTUTILS_IN_SOURCE_BUILD=1
 
diff --git a/dev-python/rdflib/rdflib-4.2.0.ebuild b/dev-python/rdflib/rdflib-4.2.0.ebuild
index 2a915363681dc..017e15667954d 100644
--- a/dev-python/rdflib/rdflib-4.2.0.ebuild
+++ b/dev-python/rdflib/rdflib-4.2.0.ebuild
@@ -5,7 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python{2_7,3_3,3_4} )
-PYTHON_REQ_USE="sqlite?"
+PYTHON_REQ_USE="sqlite?,threads(+)"
 
 # The usual required for tests
 DISTUTILS_IN_SOURCE_BUILD=1
diff --git a/dev-python/rdflib/rdflib-4.2.1.ebuild b/dev-python/rdflib/rdflib-4.2.1.ebuild
index aaeaf53790e0b..d99bce1a862b3 100644
--- a/dev-python/rdflib/rdflib-4.2.1.ebuild
+++ b/dev-python/rdflib/rdflib-4.2.1.ebuild
@@ -5,7 +5,7 @@
 EAPI=5
 
 PYTHON_COMPAT=( python{2_7,3_3,3_4} )
-PYTHON_REQ_USE="sqlite?"
+PYTHON_REQ_USE="sqlite?,threads(+)"
 
 # The usual required for tests
 DISTUTILS_IN_SOURCE_BUILD=1