diff --git a/scripts/dev/ci_install.py b/scripts/dev/ci_install.py
index c05407e12..58ae785e3 100644
--- a/scripts/dev/ci_install.py
+++ b/scripts/dev/ci_install.py
@@ -97,7 +97,7 @@ elif os.environ.get('TRAVIS_OS_NAME', None) == 'osx':
     brew(['install', 'python3', 'pyqt5'])
 
     print("Installing tox...")
-    subprocess.check_call(['sudo', 'pip3.4', 'install', 'tox'])
+    subprocess.check_call(['sudo', 'pip3', 'install', 'tox'])
 
     check_setup('python3')