diff --git a/build-constraints.yaml b/build-constraints.yaml
index 253b3c79..0eae9493 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -456,6 +456,7 @@ packages:
         - circle-packing
         - arbtt
         - ghc-heap-view
+        - tttool
 
     "Aditya Bhargava <adit@adit.io":
         - HandsomeSoup