diff --git a/build-constraints.yaml b/build-constraints.yaml
index e51df115..a5c9a76f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -6863,6 +6863,9 @@ packages:
 
       # https://github.com/commercialhaskell/stackage/issues/6322
       - hashtables < 1.3
+
+      # https://github.com/commercialhaskell/stackage/issues/6323
+      - acc < 0.2
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of