diff --git a/build-constraints.yaml b/build-constraints.yaml
index caad370a..6e2f11cd 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1840,9 +1840,9 @@ packages:
         - pipes-network-tls
         - safe-money
         - vector-bytes-instances
-        - xmlbf-xeno    < 0.2.2      # https://github.com/fosskers/servant-xml/issues/6
-        - xmlbf-xmlhtml < 0.2.2      # https://github.com/fosskers/servant-xml/issues/6
-        - xmlbf         < 0.7        # https://github.com/fosskers/servant-xml/issues/6
+        - xmlbf-xeno    
+        - xmlbf-xmlhtml 
+        - xmlbf         
 
     "Tomas Carnecky @wereHamster":
         - avers
@@ -3398,6 +3398,7 @@ packages:
         - text-rope
         - data-array-byte
         - text-builder-linear
+        - hie-bios
 
     "Ashley Yakeley <ashley@semantic.org> @AshleyYakeley":
         - countable