diff --git a/build-constraints.yaml b/build-constraints.yaml
index c3164690..7be44324 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3407,6 +3407,7 @@ packages:
         - colorize-haskell
 
     "Chris Martin <ch.martin@gmail.com> @chris-martin":
+        - loc
         - partial-semigroup
         - path-text-utf8