diff --git a/build-constraints.yaml b/build-constraints.yaml
index e31d0361..3a9d6e56 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1214,7 +1214,7 @@ packages:
         # - cabal-rpm # GHC 8.2.1
         # - stackage-query # via stackage-types compilation failure
         # - cabal-sort # BLOCKED directory 1.3
-        # - idris # bounds aeson
+        # - idris # bounds optparse-applicative, https://github.com/fpco/stackage/pull/2856
         - fedora-haskell-tools
         - libffi
         - xmonad-contrib