diff --git a/requirements.txt b/requirements.txt
index b5f7bf6..8afb2fd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,34 +13,34 @@ cffi==1.11.5
 characteristic==14.3.0
 constantly==15.1.0
 coverage==4.5.1
-cryptography==2.2.2
-eliot==1.3.0
+cryptography==2.3
+eliot==1.5.0
 enum34==1.1.6
 epsilon==0.7.3
 extras==1.0.0
 fixtures==3.0.0
 fusion-util==1.3.0
 hyperlink==18.0.0
-hypothesis==3.65.1
+hypothesis==3.66.6
 idna==2.7
 incremental==17.5.0
 ipaddress==1.0.22
 linecache2==1.0.0
-pbr==4.0.4
-prometheus-client==0.2.0
+pbr==4.1.1
+prometheus-client==0.3.0
 py2casefold==1.0.1
 pyasn1-modules==0.2.2
 pyasn1==0.4.3
 pycparser==2.18
 pyopenssl==18.0.0
-pyrsistent==0.14.3
+pyrsistent==0.14.4
 python-mimeparse==1.6.0
 service-identity==17.0.0
 six==1.11.0
 testtools==2.3.0
 toolz==0.9.0
 traceback2==1.4.0
-twisted[tls]==18.4.0
+twisted[tls]==18.7.0
 txspinneret==0.1.3
 unittest2==1.1.0
 zope.interface==4.5.0