diff --git a/build-constraints.yaml b/build-constraints.yaml
index 707bcce7..20e41476 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3954,6 +3954,7 @@ packages:
     "Type Classes <hello@typeclasses.com> @argumatronic @chris-martin":
         - ascii
         - ascii-case
+        - ascii-caseless
         - ascii-char
         - ascii-group
         - ascii-numbers