diff --git a/build-constraints.yaml b/build-constraints.yaml
index d1376bed..fc459fcd 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2162,7 +2162,7 @@ packages:
         - tree-fun
         - random-tree
         - clumpiness
-        # - find-clumpiness # build failure against optparse-applicative https://github.com/GregorySchwartz/find-clumpiness/issues/1
+        - find-clumpiness
         - blosum
         # - convert-annotation # via cassava: bounds: vector
         - rank-product