diff --git a/requirements.txt b/requirements.txt
index d6d98bf9f..40bf493b7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,8 @@
-pbr>=0.5.21,<1.0
+pbr>=0.6,<1.0
 argparse
 cliff>=1.4.3
 httplib2>=0.7.5
-iso8601>=0.1.4
+iso8601>=0.1.8
 simplejson>=2.0.9
-six>=1.4.1
+six>=1.5.2
 Babel>=1.3
diff --git a/test-requirements.txt b/test-requirements.txt
index 17ddf23ba..402590b90 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,11 +1,11 @@
-hacking>=0.5.6,<0.8
+hacking>=0.8.0,<0.9
 
 cliff-tablib>=1.0
 coverage>=3.6
 discover
 fixtures>=0.3.14
 mox>=0.5.3
-python-subunit
+python-subunit>=0.0.18
 sphinx>=1.1.2,<1.2
-testrepository>=0.0.17
-testtools>=0.9.32
+testrepository>=0.0.18
+testtools>=0.9.34