diff --git a/environment.yml b/environment.yml
index 2f0e8d6892e748c2009d2890737b1df89e2dcdfb..a076ea207ac8764ed9c2d1a88e921604052a672a 100644
--- a/environment.yml
+++ b/environment.yml
@@ -7,7 +7,7 @@ dependencies:
   - tensorflow
   - pytorch
   # viz
-  - matplotlib
+  - matplotlib-base=3.3
   # - cartopy
   # scoring
   - xskillscore  # includes sklearn