Index: Mk/Uses/pyqt.mk
===================================================================
--- Mk/Uses/pyqt.mk
+++ Mk/Uses/pyqt.mk
@@ -192,7 +192,7 @@
 py-webkitwidgets_DESC= 		Python bindings for QtWebKitWidgets module
 py-widgets_DESC=		Python bindings for QTWidgets module
 
-SIPDIR_REL=	share/py-sip/PyQt${_PYQT_VERSION}
+SIPDIR_REL=	share/py-sip-${PYTHON_VER}/PyQt${_PYQT_VERSION}
 SIPDIR=		${PREFIX}/${SIPDIR_REL}
 PLIST_SUB+=	PYQT_SIPDIR=${SIPDIR_REL}
 
@@ -219,6 +219,7 @@
 		-d ${PYTHONPREFIX_SITELIBDIR} \
 		-q ${QMAKE} \
 		--confirm-license \
+		--sip=${PREFIX}/bin/sip-${PYTHON_VER} \
 		--sipdir ${SIPDIR}
 
 # One of the things PyQt looks for to determine whether to build the Qt DBus
Index: devel/py-qt4-core/Makefile
===================================================================
--- devel/py-qt4-core/Makefile
+++ devel/py-qt4-core/Makefile
@@ -12,7 +12,7 @@
 PYQT_DIST=		yes
 
 USES=			python pyqt:4
-USE_PYTHON=		py3kplist
+USE_PYTHON=		concurrent py3kplist
 USE_PYQT=		sip
 USE_QT4=		corelib qmake_build moc_build
 
Index: devel/py-qt5-core/Makefile
===================================================================
--- devel/py-qt5-core/Makefile
+++ devel/py-qt5-core/Makefile
@@ -10,7 +10,7 @@
 PYQT_DIST=	yes
 
 USES=		python pyqt:5
-USE_PYTHON=	py3kplist
+USE_PYTHON=	concurrent py3kplist
 USE_PYQT=	sip_build
 USE_QT5=	core qmake_build