diff --git a/build-constraints.yaml b/build-constraints.yaml
index e843ee25..2cd4ca45 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2799,7 +2799,7 @@ packages:
         - servant-checked-exceptions-core
         - servant-rawm
         - servant-static-th
-        - termonad
+        - termonad < 0 # dropped until moved to gth4 (see #7540)
         - world-peace
         - xml-html-qq
         - xml-indexed-cursor