diff --git a/build-constraints.yaml b/build-constraints.yaml
index 0caf356d..1ae7a7fe 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2901,6 +2901,9 @@ packages:
         # https://github.com/fpco/stackage/issues/2354
         - mainland-pretty < 0.5.0.0
 
+        # https://github.com/fpco/stackage/issues/2365
+        - matplotlib < 0.4.1
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of