diff --git a/requirements.txt b/requirements.txt
index bf29db7584803923cbf0165cc17c0c7b7d044972..c012895e40fd49c40ba94a8ed106221f448d6103 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 astropy==4.1
 auto_mix_prep==0.2.0
 Cartopy==0.18.0
-dask==2021.10.0
+dask==2021.9.1
 dill==0.3.3
 keras==2.6.0
 keras_nightly==2.5.0.dev2021032900