diff --git a/build-constraints.yaml b/build-constraints.yaml
index 83144c6e..e0351344 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1248,7 +1248,7 @@ packages:
         - postgresql-binary
         - slave-thread < 0
         - stm-containers < 0
-        - refined
+        - refined < 0 # https://github.com/nikita-volkov/refined/issues/33
 
     "Iustin Pop <iustin@k1024.org> @iustin":
         - prefix-units