diff --git a/setup.py b/setup.py
index 8b75487a54..9dda958e46 100644
--- a/setup.py
+++ b/setup.py
@@ -40,7 +40,7 @@
     "streamz >=0.5.0",
     "datashader >=0.11.1",
     "ffmpeg",
-    "cftime",
+    "cftime <=1.4.1",
     "netcdf4",
     "dask",
     "scipy",