diff --git a/build-constraints.yaml b/build-constraints.yaml
index 6d15bdd1..2bd1e888 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1094,9 +1094,6 @@ packages:
         # https://github.com/fpco/stackage/issues/537
         - zlib < 0.6
 
-        # https://github.com/fpco/stackage/issues/549
-        - tttool < 1.4
-
         # https://github.com/fpco/stackage/issues/572
         - attoparsec < 0.13
         - aeson < 0.8.1.0