diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7a71f24d..e181b407 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4878,6 +4878,7 @@ packages:
         - currycarbon
 
     "Benjamin Orchard <thefirstmuffinman@gmail.com> @raehik":
+        - flatparse
         - strongweak
 
     "Grandfathered dependencies":