diff --git a/build-constraints.yaml b/build-constraints.yaml
index b64e658d..a552479f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1870,6 +1870,7 @@ packages:
         - language-nix
         - nix-paths
         - streamproc
+        - titlecase
 
     "Mark Fine <mark.fine@gmail.com> @markfine":
         - postgresql-schema