diff --git a/requirements.txt b/requirements.txt
index bc11b0c..7c2615b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ pyasn1==0.4.5
 pycparser==2.19
 pyflakes==2.1.1
 PyNaCl==1.3.0
-PyYAML==3.13
+PyYAML==5.4
 requests==2.20.1
 six==1.12.0
 urllib3==1.24.1