diff --git a/requirements_dev.txt b/requirements_dev.txt
index b443d9b..48c2ad4 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -2,7 +2,7 @@ numpy
 xarray
 pandas
 cftime==1.6.1
-netCDF4==1.6.4
+netCDF4==1.7.4
 wheel==0.46.2
 flake8==3.7.8
 tox==4.6.4