From e2f6fb3a6dd022f86b07b2665cfe0fc2f3859d33 Mon Sep 17 00:00:00 2001
From: Michael Snoyman <michael@snoyman.com>
Date: Sun, 31 Dec 2017 15:25:48 +0200
Subject: [PATCH] Upper bound for #3153

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

diff --git a/build-constraints.yaml b/build-constraints.yaml
index 46e482b1..2ef68325 100644
--- a/build-constraints.yaml
+++ b/build-constraints.yaml
@@ -3163,6 +3163,9 @@ packages:
         # https://github.com/fpco/stackage/issues/3152
         - EdisonCore < 1.3.2
 
+        # https://github.com/fpco/stackage/issues/3153
+        - megaparsec < 6.4
+
 # end of packages
 
 # Package flags are applied to individual packages, and override the values of