diff --git a/build-constraints.yaml b/build-constraints.yaml
index 07cdef3c..c65236c1 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3714,8 +3714,8 @@ packages:
         - tasty-ant-xml
 
     "Eugene Smolanka <esmolanka@gmail.com> @esmolanka":
-        - sexp-grammar < 0
-        - invertible-grammar < 0
+        - sexp-grammar
+        - invertible-grammar
 
     "Maximilian Tagher <feedback.tagher@gmail.com> @MaxGabriel":
         - aeson-iproute