diff --git a/build-constraints.yaml b/build-constraints.yaml
index c03dac50..1ba9fc5d 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -669,6 +669,7 @@ packages:
 
     "Simon Michael <simon@joyful.com> @simonmichael":
         # 2.12.1 testsuite http://bugs.darcs.net/issue2507
+        # https://github.com/fpco/stackage/pull/1848
         #- darcs
         - hledger
         - hledger-lib