diff --git a/build-constraints.yaml b/build-constraints.yaml
index 573e6356..1839447e 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -985,7 +985,7 @@ packages:
         - monad-extras
         - optparse-simple
         - hpack
-        # - stack < 9.9.9  # https://github.com/commercialhaskell/stack/issues/3683
+        - stack < 9.9.9
 
     "Michael Sloan <mgsloan@gmail.com> @mgsloan":
         - th-orphans