diff --git a/requirements.txt b/requirements.txt
index 8b061c5..c2ab3ed 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,9 +1,9 @@
-tornado==5.0
-pyzmq==17.0.0
-transitions==0.6.4
+tornado==5.1
+pyzmq==17.1.2
+transitions==0.6.6
 terminado==0.8.1
 watchdog==0.8.3
-PyYAML==3.12
+PyYAML==3.13
 Jinja2==2.10
-cryptography==2.2.2
+cryptography==2.3.1
 python-dateutil==2.7.3