From 0fc04e60ad561126e7fc4fee525d76797570ae2a Mon Sep 17 00:00:00 2001
From: Michael Snoyman <michael@fpcomplete.com>
Date: Wed, 4 Nov 2015 05:00:28 +0000
Subject: [PATCH] Upper bound for #946

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

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 350b6331..c245ee53 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -1654,6 +1654,7 @@ packages:
 
         # https://github.com/fpco/stackage/issues/946
         - cereal < 0.5
+        - messagepack < 0.5.0
         - messagepack-rpc < 0.5.1