diff --git a/build-constraints.yaml b/build-constraints.yaml
index 19c75965..56ee629a 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -4950,7 +4950,7 @@ packages:
 
     "Jan Synacek <jan.synacek@scrive.com> @jsynacek":
         - hpqtypes
-        - hpqtypes-extras
+        - hpqtypes-extras < 0 # 1.18.0.0 https://github.com/scrive/hpqtypes-extras/issues/129
         - fields-json
         - log-base
         - unjson