diff --git a/tools/install_venv_common.py b/tools/install_venv_common.py
index 3e8c1e4a81f..e279159abbc 100644
--- a/tools/install_venv_common.py
+++ b/tools/install_venv_common.py
@@ -112,12 +112,12 @@ class InstallVenv(object):
         print('Installing dependencies with pip (this can take a while)...')
 
         # First things first, make sure our venv has the latest pip and
-        # setuptools.
-        self.pip_install('pip>=1.3')
+        # setuptools and pbr
+        self.pip_install('pip>=1.4')
         self.pip_install('setuptools')
+        self.pip_install('pbr')
 
-        self.pip_install('-r', self.requirements)
-        self.pip_install('-r', self.test_requirements)
+        self.pip_install('-r', self.requirements, '-r', self.test_requirements)
 
     def parse_args(self, argv):
         """Parses command-line arguments."""
@@ -125,7 +125,7 @@ class InstallVenv(object):
         parser.add_option('-n', '--no-site-packages',
                           action='store_true',
                           help="Do not inherit packages from global Python "
-                               "install")
+                               "install.")
         return parser.parse_args(argv[1:])[0]