diff --git a/requirements.txt b/requirements.txt
index 24d525f..89d5443 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ py==1.5.4
 Pygments==2.2.0
 pytest==3.7.2
 pytest-cov==2.5.1
-PyYAML==3.13
+PyYAML==5.4
 requests==2.19.1
 simplegeneric==0.8.1
 six==1.11.0