diff --git a/build-constraints.yaml b/build-constraints.yaml
index 53505a6a..ed8670f1 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -2834,8 +2834,7 @@ packages:
         - massiv-io
 
     "Hans-Peter Deifel <hpd@hpdeifel.de> @hpdeifel":
-        []
-        # - hledger-iadd # megaparsec 6.5.0
+        - hledger-iadd
 
     "Roy Levien <royl@aldaron.com> @orome":
         - crypto-enigma