Upgrade PyYAML to 5.3

1 files changed, 1 insertions, 1 deletions

diff --git a/setup.py b/setup.py
index 6fe1d14..e3b2198 100644
--- a/setup.py
+++ b/setup.py
@@ -73,7 +73,7 @@ setup(
     ],
 
     install_requires=[
-        'PyYAML>=5.1.2,<6',
+        'PyYAML>=5.3,<6',
     ],
 
     # To provide executable scripts, use entry points in preference to the