diff --git a/build-constraints.yaml b/build-constraints.yaml
index 3739afa3..095c8b6e 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1649,7 +1649,7 @@ packages:
         - ghcjs-perch
 
     "Tom Ellis <tom-stackage@jaguarpaw.co.uk> @tomjaguarpaw":
-        - opaleye
+        - opaleye < 0.9 # https://github.com/commercialhaskell/stackage/issues/6419
         - product-profunctors
         - strict-wrapper