diff --git a/build-constraints.yaml b/build-constraints.yaml
index ad3bac15..9fe941c7 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -485,7 +485,7 @@ packages:
         - clock
 
     "Stefan Wehr <wehr@factisresearch.com> @skogsbaer":
-        - HTF
+        # - HTF # https://github.com/skogsbaer/HTF/issues/66
         - xmlgen
         - stm-stats
         - large-hashable