diff --git a/build-constraints.yaml b/build-constraints.yaml
index d0f37cf4..afe81448 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -216,6 +216,7 @@ packages:
 
     "Richard Cook <rcook@rcook.org> @rcook":
         - hidden-char
+        - oset
         - req-url-extra
 
     "Vanessa McHale <tmchale@wisc.edu> @vmchale":