From 3e3d8fa3a08a1426d7e64359c12939d778771797 Mon Sep 17 00:00:00 2001
From: Mihai Maruseac <mihai.maruseac@gmail.com>
Date: Thu, 2 Aug 2018 07:01:30 -0700
Subject: [PATCH] Upper bound req (#3876)

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

diff --git a/build-constraints.yaml b/build-constraints.yaml
index ba5878f4..c73e52c8 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3640,6 +3640,9 @@ packages:
         # https://github.com/commercialhaskell/stackage/issues/3869
         - vinyl < 0.9.0
 
+        # https://github.com/commercialhaskell/stackage/issues/3876
+        - req < 1.2.0
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of