diff --git a/build-constraints.yaml b/build-constraints.yaml
index 237edf11..4c7aedb8 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3093,6 +3093,7 @@ packages:
         - ranged-list
         - c-enum
         - c-struct
+        - union-angle
 
     "Jan Gerlinger <git@jangerlinger.de> @JanGe":
         - irc-dcc < 0