diff --git a/requirements/test.txt b/requirements/test.txt
index 7048d08d..a51da489 100644
--- a/requirements/test.txt
+++ b/requirements/test.txt
@@ -1,5 +1,6 @@
+cftime
+dask
+netcdf4
 pytest>=3.6
 pytest-cov
 pytest-timeout
-dask
-netcdf4