diff --git a/build-constraints.yaml b/build-constraints.yaml
index 69016aab..7c6fb70b 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2786,7 +2786,7 @@ packages:
         - butcher
         - czipwith
         - data-tree-print
-        - brittany < 0 # GHC 8.4 via ghc-8.4.1
+        - brittany
 
     "Ryan Mulligan <ryan@ryantm.com> @ryantm":
         - HDBC-mysql