diff --git a/build-constraints.yaml b/build-constraints.yaml
index 8e990b27..6990fd1f 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3252,7 +3252,7 @@ packages:
         - bno055-haskell
 
     "Lars Brünjes <brunjlar@gmail.com> @brunjlar":
-        # neural
+        # neural # https://github.com/fpco/stackage/issues/2735
         - pell
 
     "Matt Noonan <matt.noonan@gmail.com> @matt-noonan":