diff --git a/requirements.txt b/requirements.txt
index 8e07ab06..8923d330 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -31,7 +31,7 @@ pyethash==0.1.27
 pysha3==1.0.2
 python3-openid==3.1.0
 pytz==2017.2
-PyYAML==3.12
+PyYAML==5.4
 repoze.lru==0.7
 requests==2.18.4
 requests-oauthlib==0.8.0