diff --git a/build-constraints.yaml b/build-constraints.yaml
index f5f6d9ec..d96eb571 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2468,6 +2468,8 @@ packages:
         - hw-hedgehog
         - hw-hspec-hedgehog
         - hw-int
+        - hw-fingertree
+        - hw-fingertree-strict
         - hw-json
         - hw-parser
         - hw-prim