diff --git a/build-constraints.yaml b/build-constraints.yaml
index 646736f0..e00c433f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2231,6 +2231,7 @@ packages:
 
         # https://github.com/fpco/stackage/issues/1371
         - data-default < 0.6.0
+        - bcrypt < 0.0.9
 
         # https://github.com/fpco/stackage/issues/1380
         - Diff < 0.3.3