diff --git a/requirements.txt b/requirements.txt
index 41d35f0..c74751b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,5 +3,5 @@ greenlet==0.4.13
 Mako==1.0.6
 MarkupSafe==1.0
 pathtools==0.1.2
-PyYAML==3.12
+PyYAML==5.1
 watchdog==0.8.3
diff --git a/setup.py b/setup.py
index 0d9a9fb..533a530 100644
--- a/setup.py
+++ b/setup.py
@@ -51,7 +51,7 @@
         'Mako==1.0.6',
         'MarkupSafe==1.0',
         'greenlet==0.4.13',
-        'PyYAML==3.12',
+        'PyYAML==5.1',
         'argh==0.26.2',
         'argparse==1.2.1',
         'pathtools==0.1.2',