diff --git a/requirements.txt b/requirements.txt
index c2e797b..9ea6ac6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 backports-abc==0.5
 backports.ssl-match-hostname==3.4.0.2
 click==6.7
-PyYAML==3.12
+PyYAML==5.1
 requests==2.13.0
 singledispatch==3.4.0.3
 six==1.10.0
diff --git a/setup.py b/setup.py
index 121d256..4fd720b 100644
--- a/setup.py
+++ b/setup.py
@@ -19,7 +19,7 @@
 
 dependencies = [
     'click==6.7',
-    'PyYAML==3.12',
+    'PyYAML==5.1',
     'requests>=2.4.2',
     'six==1.10.0',
     'tornado==4.4.2',