diff --git a/build-constraints.yaml b/build-constraints.yaml
index 9c70493d..175ef61d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3488,7 +3488,6 @@ packages:
         - xxhash < 0 # BuildFailureException Process exited with ExitFailure 1: ./Setup build
         - Unique < 0 # GHC 8.4 via base-4.11.0.0
         - ghc-compact < 0 # GHC 8.4 via base-4.11.1.0
-        - classyplate < 0 # GHC 8.4 via template-haskell-2.13.0.0
         - hastache < 0 # GHC 8.4 via base-4.11.0.0
         - token-bucket < 0 # GHC 8.4 via base-4.11.0.0
         - attoparsec-time < 0 # GHC 8.4 via doctest-0.15.0