diff --git a/requirements.txt b/requirements.txt
index 65a866e..cd90499 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
-port-for==0.3.1
-python-dateutil==2.6.0
-requests==2.13.0
+port-for==0.4
+python-dateutil==2.7.3
+requests==2.19.1