diff --git a/tox.ini b/tox.ini
index d0863eb..76cbe8a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,6 +11,7 @@ setenv =
     GIT_COMMITTER_NAME = "test"
     GIT_AUTHOR_EMAIL = "test@example.com"
     GIT_COMMITTER_EMAIL = "test@example.com"
+	LC_ALL=en_US.UTF-8
 commands =
     coverage erase
     coverage run -m pytest {posargs:tests}