From 1b9f3d423f5bd78050e1f07f2f7a38a93d237aa9 Mon Sep 17 00:00:00 2001
From: Michael Snoyman <michael@snoyman.com>
Date: Sun, 8 Nov 2015 18:06:56 -0800
Subject: [PATCH] Upper bound for #968

---
 build-constraints.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/build-constraints.yaml b/build-constraints.yaml
index ec01cf88..84bfa629 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1707,6 +1707,9 @@ packages:
         # https://github.com/fpco/stackage/issues/960
         - HaskellNet < 0.5
 
+        # https://github.com/fpco/stackage/issues/968
+        - bifunctors < 5.1
+
 # end of packages