diff --git a/build-constraints.yaml b/build-constraints.yaml
index fb13999c..bea7056f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5121,7 +5121,6 @@ packages:
         - xxhash < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
         - Unique < 0 # GHC 8.4 via base-4.11.0.0
         - hastache < 0 # GHC 8.4 via base-4.11.0.0
-        - attoparsec-time < 0 # GHC 8.4 via doctest-0.150.
         - syb-with-class < 0 # GHC 8.4 via template-haskell-2.13.0.0
         - lens-labels < 0 # deprecated https://github.com/commercialhaskell/stackage/pull/4358
         - proto-lens-combinators < 0 # deprecated https://github.com/commercialhaskell/stackage/pull/4358