diff --git a/requirements.txt b/requirements.txt
index 083f891..94761f1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 selenium==3.7.0
 splinter==0.7.7
-pyyaml==3.12
+pyyaml==5.1
 lettuce==0.2.23