diff --git a/requirements.txt b/requirements.txt
index 6bb586368..b8acb2dee 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ packaging==16.8
 pygments==2.2.0
 pytest-runner>=3.0.0,<3.1.0
 pytest>=3.2.0,<3.3.0
-PyYaml==3.13
+PyYaml==5.1
 readme-renderer>=24.0
 setuptools>=40.6.2
 six==1.11.0
diff --git a/setup.py b/setup.py
old mode 100755
new mode 100644
index 41219bef0..146ab9f09
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@
 install_requirements = [
     "boto3>=1.3,<2.0",
     "click==6.7",
-    "PyYaml==3.13",
+    "PyYaml==5.1",
     "Jinja2>=2.8,<3",
     "packaging==16.8",
     "colorama==0.3.7",