diff --git a/build-constraints.yaml b/build-constraints.yaml
index aca44822..47b920ff 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3697,7 +3697,6 @@ packages:
         - HandsomeSoup < 0
         - HaskellNet < 0
         - HaskellNet-SSL < 0
-        - IPv6Addr < 0
         - IPv6DB < 0
         - JuicyPixels-extra < 0
         - JuicyPixels-scale-dct < 0