1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index 2bf7c6b2..26c643c8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,7 +5,7 @@ skipdist = True
 
 [testenv]
 usedevelop = True
-install_command = pip install -U {opts} {packages}
+install_command = pip install {opts} {packages}
 setenv = VIRTUAL_ENV={envdir}
          OS_STDOUT_CAPTURE=1
          OS_STDERR_CAPTURE=1