diff --git a/build-constraints.yaml b/build-constraints.yaml
index 54c299c1..438c1a44 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -9,7 +9,7 @@ cabal-format-version: "1.24"
 packages:
     "Olaf Chitil <oc@kent.ac.uk> @OlafChitil":
         - fpretty
-        
+
     "Maarten Faddegon <stackage@maartenfaddegon.nl> @MaartenFaddegon":
         - libgraph
         - Hoed
@@ -2998,6 +2998,9 @@ packages:
         []
         # - HDBC-mysql # GHC 8.2.1
 
+    "Tony Morris <haskell@tmorris.net> @tonymorris":
+        - validation
+
     "Tony Day <tonyday567@gmail.com> @tonyday567":
         - numhask
         - numhask-range