diff --git a/build-constraints.yaml b/build-constraints.yaml
index 9b525b24..4d45c968 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2241,6 +2241,7 @@ packages:
         - SafeSemaphore
         - streamproc
         - titlecase
+        - xmonad
 
     "Mark Fine <mark.fine@gmail.com> @markfine":
         - postgresql-schema