1 files changed, 0 insertions, 1 deletions
diff --git a/tox.ini b/tox.ini
index 7329d2b..0552a17 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,7 +1,6 @@
 [tox]
 # Environment changes have to be manually synced with '.travis.yml'.
 envlist = py35,py36,p37,p38
-isolated_build = true
 
 [pytest]
 addopts = -v --cov rsa --cov-report term-missing