diff --git a/build-constraints.yaml b/build-constraints.yaml
index 2a536023..63916965 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4711,6 +4711,9 @@ packages:
       - servant-swagger < 1.1.8
       - aur < 6.3.0
 
+      # https://github.com/commercialhaskell/stackage/issues/5211
+      - small-bytearray-builder < 0.3.4
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of