diff --git a/build-constraints.yaml b/build-constraints.yaml
index 31fff477..a53d8fa9 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1929,6 +1929,9 @@ packages:
         # https://github.com/aslatter/qc-instances/issues/18
         - QuickCheck < 2.8.2
 
+        # https://github.com/isomorphism/these/issues/44
+        - quickcheck-instances < 0.3.12
+
         # https://github.com/fpco/stackage/issues/1146
         - transformers-compat < 0.5