diff --git a/build-constraints.yaml b/build-constraints.yaml
index fb5d18e5..fd3c66bb 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -7733,6 +7733,9 @@ packages:
         # file-io
         - git-annex < 10.20260213
 
+        # xhtml
+        - cgi < 3001.5.2.0
+
     "Stackage upper bounds":
 
         # https://github.com/commercialhaskell/stackage/issues/7851