diff --git a/build-constraints.yaml b/build-constraints.yaml
index b7ff7db8..95af143d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -796,7 +796,7 @@ packages:
 
         - time-manager
         - pantry
-        - mega-sdist
+        - mega-sdist < 0 # https://github.com/snoyberg/mega-sdist/issues/7
         - http-download
         - hi-file-parser
         - rio-prettyprint