diff --git a/build-constraints.yaml b/build-constraints.yaml
index d007c9c1..04f6b95d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -5724,7 +5724,6 @@ packages:
         - paramtree
         - path-pieces
         - pcg-random
-        - pdc
         - peggy
         - pipes-bytestring
         - pipes-group