diff --git a/python/requirements.txt b/python/requirements.txt
index aba27a5b82..a4763f59a2 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -11,7 +11,7 @@ Flask-OpenTracing >= 1.1.0, < 1.2.0
 opentracing >= 2.2.0, < 2.3.0
 jaeger-client >= 4.1.0, < 4.2.0
 grpcio-opentracing >= 1.1.4, < 1.2.0
-pyaml<20.0.0
+PyYAML<5.4
 gunicorn >= 19.9.0, < 20.1.0
 minio >= 4.0.9, < 6.0.0
 azure-storage-blob >= 2.0.1, < 3.0.0
diff --git a/python/setup.py b/python/setup.py
index 2d6912a1eb..bf118e64a5 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -38,7 +38,7 @@
         "opentracing >= 2.2.0, < 2.3.0",
         "jaeger-client >= 4.1.0, < 4.2.0",
         "grpcio-opentracing >= 1.1.4, < 1.2.0",
-        "pyaml<20.0.0",
+        "PyYAML<5.4",
         "gunicorn >= 19.9.0, < 20.1.0",
         "minio >= 4.0.9, < 6.0.0",
         "azure-storage-blob >= 2.0.1, < 3.0.0",