diff --git a/build-constraints.yaml b/build-constraints.yaml
index 29541858..8233225f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -7307,9 +7307,6 @@ packages:
         # https://github.com/commercialhaskell/stackage/issues/6629
         - algebraic-graphs < 0.7
 
-        # https://github.com/commercialhaskell/stackage/issues/6638
-        - invariant < 0.6
-
         # https://github.com/commercialhaskell/stackage/issues/6669
         - enummapset < 0.7.0.0