diff --git a/requirements.txt b/requirements.txt
index 5f8b1ca10..e1933915a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ pip==9.0.1
 pygments==2.1.3
 pylint==1.5.4
 pyOpenSSL==16.2.0
-pyyaml==3.11
+pyyaml==5.1
 requests==2.9.1
 setuptools==30.4.0
 six==1.10.0