diff --git a/lower-constraints.txt b/lower-constraints.txt
index 646df7c..20e3c08 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -11,13 +11,13 @@ extras==1.0.0
 fixtures==3.0.0
 gitdb==0.6.4
 GitPython==1.0.1
-greenlet==0.4.10
+greenlet==0.4.15
 imagesize==0.7.1
 iso8601==0.1.11
 Jinja2==2.10
 keystoneauth1==3.4.0
 linecache2==1.0.0
-MarkupSafe==1.0
+MarkupSafe==1.1.1
 mox3==0.20.0
 msgpack-python==0.4.0
 netaddr==0.7.18
@@ -35,7 +35,7 @@ pyparsing==2.1.0
 python-mimeparse==1.6.0
 python-subunit==1.0.0
 pytz==2013.6
-PyYAML==3.12
+PyYAML==3.13
 requests==2.14.2
 requestsexceptions==1.2.0
 rfc3986==0.3.1
diff --git a/test-requirements.txt b/test-requirements.txt
index 7207aba..b90077d 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -9,7 +9,7 @@ stestr>=2.0.0 # Apache-2.0
 # for testing optional parts
 oslo.config>=5.2.0 # Apache-2.0
 eventlet!=0.18.3,!=0.20.1,>=0.18.2 # MIT
-greenlet>=0.4.10 # MIT
+greenlet>=0.4.15 # MIT
 
 coverage!=4.4,>=4.0 # Apache-2.0