diff --git a/build-constraints.yaml b/build-constraints.yaml
index db326ce9..1b69f311 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2176,6 +2176,8 @@ packages:
         # https://github.com/fpco/stackage/issues/1343
         - pipes-transduce < 0.3.4.0
 
+        # https://github.com/fpco/stackage/issues/1349
+        - hpack < 0.12.0
 # end of packages