diff --git a/requirements.txt b/requirements.txt
index 2938075243..2c2819a5b8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,8 +9,8 @@ pyOpenSSL>=0.14 # Apache-2.0
 requests>=2.10.0 # Apache-2.0
 ndg-httpsclient>=0.4.2;python_version<'3.0' # BSD
 netaddr!=0.7.16,>=0.7.13 # BSD
-PrettyTable<0.8,>=0.7 # BSD
+PrettyTable<0.8,>=0.7.1 # BSD
 pycrypto>=2.6 # Public Domain
 python-memcached>=1.56 # PSF
-PyYAML>=3.1.0 # MIT
+PyYAML>=3.10.0 # MIT
 virtualenv # MIT