diff --git a/ci/test_requirements.txt b/ci/test_requirements.txt
index e8a07062276..8adbd73afbd 100644
--- a/ci/test_requirements.txt
+++ b/ci/test_requirements.txt
@@ -2,3 +2,4 @@ pytest==6.2.4
 pytest-mpl==0.13
 netCDF4==1.5.7
 coverage==5.5
+dask==2021.2.0