fix CI on py3.4

tomato42 · tomato42 · commit 1ea4aef64abb · 2021-05-21T17:11:43.000+02:00
diff --git a/build-requirements-3.4.txt b/build-requirements-3.4.txt
@@ -4,3 +4,4 @@ hypothesis
 pytest>=4.6.0
 PyYAML<5.3
 coverage
+attrs<21
diff --git a/tox.ini b/tox.ini
@@ -10,6 +10,7 @@ deps =
      py{33}: hypothesis<3.44
      py{26}: unittest2
      py{26}: hypothesis<3
+     py{34}: attrs<21
      py{26,27,34,35,36,37,38,39,py,py3}: pytest
      py{27,34,35,36,37,38,39,py,py3}: hypothesis
      gmpy2py{27,39}: gmpy2
