diff --git a/build-constraints.yaml b/build-constraints.yaml
index c564c960..eb9e7872 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1672,6 +1672,7 @@ packages:
         - annotated-wl-pprint
 
     "Yitz Gale <gale@sefer.org> @ygale":
+        - strict-concurrency
         - timezone-series
         - timezone-olson