diff --git a/build-constraints.yaml b/build-constraints.yaml
index 5c47a805..c4161d22 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4950,6 +4950,9 @@ packages:
       - hslua < 1.2
       - hslua-module-text < 0.3
 
+      # https://github.com/commercialhaskell/stackage/issues/5603
+      - base < 4.14.1
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of