diff --git a/build-constraints.yaml b/build-constraints.yaml
index 3c32b369..2ff7633a 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1296,6 +1296,11 @@ packages:
     "Brian Lewis brian@lorf.org @bsl":
         - bindings-GLFW
         - GLFW-b
+        
+    "Heinrich Apfelmus apfelmus@quantentunnel.de @HeinrichApfelmus":
+        - reactive-banana
+        - threepenny-gui
+        - operational
 
     "Stackage upper bounds":
         # https://github.com/fpco/stackage/issues/537