diff --git a/docket/requirements.txt b/docket/requirements.txt
index ae48772..f9bc3bb 100644
--- a/docket/requirements.txt
+++ b/docket/requirements.txt
@@ -24,7 +24,7 @@ pyOpenSSL==17.0.0
 pyparsing==2.2.0
 python-dateutil==2.6.0
 pytz==2017.2
-PyYAML==3.12
+PyYAML==5.4
 redis==2.10.5
 requests==2.17.3
 simplejson==3.10.0
diff --git a/requirements.txt b/requirements.txt
index 93497c7..5d96896 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ Jinja2==2.10
 kombu==4.1.0
 MarkupSafe==1.0
 pytz==2017.3
-PyYAML==3.12
+PyYAML==5.4
 redis==2.10.6
 vine==1.1.4
 Werkzeug==0.14.1