diff --git a/build-constraints.yaml b/build-constraints.yaml
index 682727f1..a24799c6 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2887,10 +2887,10 @@ packages:
     "Lennart Spitzner <hexagoxel@hexagoxel.de> @lspitzner":
         - multistate
         - pqueue
-        - butcher < 0 # via free-5.1
+        - butcher
         - czipwith
         - data-tree-print
-        - brittany < 0 # via butcher
+        - brittany
 
     "Ryan Mulligan <ryan@ryantm.com> @ryantm":
         - HDBC-mysql