diff --git a/.appveyor/requirements.txt b/.appveyor/requirements.txt
index 12ed0ac02e..e31d42aaef 100644
--- a/.appveyor/requirements.txt
+++ b/.appveyor/requirements.txt
@@ -6,4 +6,4 @@ netCDF4==1.2.2
 rasterio==0.31.0
 pyzmq==15.2.0
 psycopg2==2.6.1
-scipy==0.17.0
+scipy==1.4.0