From 334e62ed53c0455047a59ef0fa9b63f63a02adc8 Mon Sep 17 00:00:00 2001
From: Martin Kojtal <martin.kojtal@arm.com>
Date: Mon, 4 Jan 2021 15:14:57 +0000
Subject: [PATCH] travis: fix 3.5 test bug in attrs

Using specific version (pre 20) should fix the issue https://github.com/ARMmbed/mbed-os/issues/14110
---
 .travis.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.travis.yml b/.travis.yml
index 6c73ef1226..8b0fdd6b8b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -229,6 +229,7 @@ matrix:
         - |-
           tr -d ' ' >> requirements.txt <<< "
           mock==2.0.0
+          attrs==19.1.0
           pytest==3.3.0
           pylint>=1.9,<2
           hypothesis>=3,<4