diff --git a/ci/requirements-3.5_NUMPY_DEV.build.sh b/ci/requirements-3.5_NUMPY_DEV.build.sh
index 91fa15491bbf7..b6c8a477e6f5e 100644
--- a/ci/requirements-3.5_NUMPY_DEV.build.sh
+++ b/ci/requirements-3.5_NUMPY_DEV.build.sh
@@ -8,6 +8,6 @@ echo "install numpy master wheel"
 pip uninstall numpy -y
 
 # install numpy wheel from master
-pip install --pre --upgrade --no-index --timeout=60 --trusted-host travis-dev-wheels.scipy.org -f http://travis-dev-wheels.scipy.org/ numpy scipy
+pip install --pre --upgrade --no-index --timeout=60 --trusted-host travis-dev-wheels.scipy.org -f http://travis-dev-wheels.scipy.org/ numpy
 
 true