diff --git a/requirements.txt b/requirements.txt
index 291364a..16a586e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 prometheus_client==0.0.14
-pyyaml==3.11
+pyyaml==5.1
 requests==2.10.0
 requests-kerberos==0.10.0