diff --git a/setup.py b/setup.py
index e333a391..38186790 100644
--- a/setup.py
+++ b/setup.py
@@ -131,7 +131,7 @@
         "Flask-WTF==0.12",
         "typing",
         "click==6.7",
-        "pyyaml==3.13",
+        "pyyaml==5.1",
         "requests",
         "future",
         "lit",