diff --git a/build-constraints.yaml b/build-constraints.yaml
index 549accfa..854a2a59 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2086,6 +2086,7 @@ packages:
 
     "Yoshikuni Jujo <PAF01143@nifty.ne.jp> @YoshikuniJujo":
         - zot
+        - yjtools
 
     # If you stop maintaining a package you can move it here.
     # It will then be disabled if it starts causing problems.