diff --git a/requirements.txt b/requirements.txt
index 1028a27..d389cad 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,3 +1,3 @@
 requests==2.18.1
 Flask==0.12.2
-PyYAML==3.12
\ No newline at end of file
+PyYAML==5.1
\ No newline at end of file