diff --git a/requirements-dev.txt b/requirements-dev.txt
index 5fb2233..0de9ceb 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -5,4 +5,4 @@ pycodestyle==2.5.0
 pyflakes==1.6.0
 readme_renderer[md]==24.0
 requests_mock
-twine==1.13.0
+twine==1.15.0
diff --git a/requirements.txt b/requirements.txt
index d926f6a..fb46bed 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-PyYaml==4.2b1
+PyYaml==5.3
 azure-common==1.1.24
 azure-mgmt-dns==3.0.0
 boto3==1.11.0