diff --git a/requirements.txt b/requirements.txt
index 1819f46..a5fe45b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -26,6 +26,6 @@ pycrypto==2.6.1
 pytest==2.6.4
 pytest-cov==1.8.1
 python-vagrant==0.5.3
-PyYAML==3.11
+PyYAML==5.4
 tox==1.9.0
 virtualenv==12.0.7