diff --git a/requirements.txt b/requirements.txt
index 1228365..28ffeac 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,15 +1,15 @@
 appdirs==1.4.3
-cassandra-driver==3.8.0
-Cython==0.25.2
-flake8==3.3.0
-isort==4.2.5
+cassandra-driver==3.13.0
+Cython==0.27.3
+flake8==3.5.0
+isort==4.3.3
 mccabe==0.6.1
 packaging==16.8
-pluggy==0.4.0
-py==1.4.32
+pluggy==0.6.0
+py==1.5.2
 pycodestyle==2.3.1
-pyflakes==1.5.0
+pyflakes==1.6.0
 pyparsing==2.2.0
-six==1.10.0
-tox==2.6.0
+six==1.11.0
+tox==2.9.1
 virtualenv==15.1.0