diff --git a/ci/requirements-3.5_OSX.sh b/ci/requirements-3.5_OSX.sh
index c2978b175968c..f22f57c38364d 100644
--- a/ci/requirements-3.5_OSX.sh
+++ b/ci/requirements-3.5_OSX.sh
@@ -4,4 +4,4 @@ source activate pandas
 
 echo "install 35_OSX"
 
-conda install -n pandas -c conda-forge feather-format==0.3.1 fastparquet
+conda install -n pandas -c conda-forge feather-format==0.3.1 fastparquet pyarrow=0.5.0