diff --git a/build-constraints.yaml b/build-constraints.yaml
index 7848af31..0a565f3c 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -34,7 +34,7 @@ packages:
 
     "Manuel Bärenz <programming@manuelbaerenz.de> @turion":
         - dunai
-        - rhine < 0 # via free-5.1
+        - rhine
 
     "Paul Johnson <paul@cogito.org.uk> @PaulJohnson":
         - geodetics