diff --git a/requirements.txt b/requirements.txt
index 52504bd21..8d0daa46d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 numpy
 xarray
-dask[array]
-distributed
+dask[array] == 2021.02.0
+distributed == 2021.02.0
 dask-ml
 scipy
 typing-extensions