diff --git a/requirements.txt b/requirements.txt
index 921ab65a..4b398466 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,4 +8,4 @@ pyparsing>=2.1.0 # MIT
 six>=1.9.0 # MIT
 stevedore>=1.20.0 # Apache-2.0
 unicodecsv>=0.8.0;python_version<'3.0' # BSD
-PyYAML>=3.10.0 # MIT
+PyYAML>=3.10 # MIT
diff --git a/test-requirements.txt b/test-requirements.txt
index b56d3558..21be5057 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -5,7 +5,7 @@
 python-subunit>=0.0.18 # Apache-2.0/BSD
 testrepository>=0.0.18 # Apache-2.0/BSD
 testtools>=1.4.0 # MIT
-mock>=2.0 # BSD
+mock>=2.0.0 # BSD
 testscenarios>=0.4 # Apache-2.0/BSD
 
 coverage!=4.4,>=4.0 # Apache-2.0