diff --git a/build-constraints.yaml b/build-constraints.yaml
index 48582158..5ad25dc6 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -907,6 +907,7 @@ packages:
         - boxes
         - edit-distance
         - lattices
+        - monad-time
         - pattern-arrows
         - postgresql-simple-url
         - purescript