diff --git a/build-constraints.yaml b/build-constraints.yaml
index be181212..201d0d33 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3013,8 +3013,8 @@ packages:
         []
         # - HDBC-mysql # GHC 8.2.1
 
-    "Tony Morris <haskell@tmorris.net> @tonymorris":
-        - validation
+#    "Tony Morris <haskell@tmorris.net> @tonymorris":
+#        - validation # https://github.com/fpco/stackage/pull/2872
 
     "Tony Day <tonyday567@gmail.com> @tonyday567":
         - numhask