diff --git a/setup.py b/setup.py
old mode 100755
new mode 100644
index cbcab0a..0e8026d
--- a/setup.py
+++ b/setup.py
@@ -39,7 +39,7 @@
         'py4j>=0.10.9.4,<=0.10.9.7',
         'pandas>=0.19.2',
         'numpy>=1.18.5,<=1.21.6',
-        'PyYAML==5.1.2',
+        'PyYAML==5.4',
         'python-snappy>=0.5.4,<=0.6.0',
         'urllib3<1.27,>=1.25.4',
         'typed-ast<1.5,>=1.4.0'