diff --git a/requirements.txt b/requirements.txt
index 9d21a8e7aa..3ebf85b11c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ pyprof2calltree==1.3.2
 pyramid==1.7
 pyramid-exclog==0.7
 pytz==2014.10
-PyYAML==3.11
+PyYAML==5.4
 repoze.lru==0.6
 repoze.profile==2.1
 requests==2.10.0