diff --git a/requirements.txt b/requirements.txt
index d2ef600..723d4d5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ msgpack-python==0.5.6
 pyrsistent==0.14.11
 python-dateutil==2.8.0
 pytz==2018.9
-pyyaml==5.1
+pyyaml==5.4
 requests-toolbelt==0.9.1
 requests==2.21.0
 rfc3987==1.3.8
diff --git a/verify/requirements.txt b/verify/requirements.txt
index 0ac5f36..f6a6c33 100644
--- a/verify/requirements.txt
+++ b/verify/requirements.txt
@@ -16,7 +16,7 @@ msgpack-python==0.5.6
 pyrsistent==0.14.11
 python-dateutil==2.8.0
 pytz==2018.9
-pyyaml==5.1
+pyyaml==5.4
 requests-toolbelt==0.9.1
 requests==2.21.0
 rfc3987==1.3.8