diff --git a/build-constraints.yaml b/build-constraints.yaml
index db84be30..b0a38237 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -6962,6 +6962,10 @@ packages:
       - texmath < 0.12.3
       - citeproc < 0.4
 
+      # https://github.com/commercialhaskell/stackage/issues/6020
+      - call-stack < 0.4.0
+
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of