diff --git a/requirements.txt b/requirements.txt
index c0742cc..4a6a1ec 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ restkit==4.2.0
 jsonschema==0.5
 couch-named-python==0.2.2
 statsd-client==1.0.2
-PyYAML==3.10
+PyYAML==5.4
 pytz==2012b
 strict-rfc3339==0.3
 -e git://github.com/ukhas/M2Crypto.git#egg=M2Crypto