diff --git a/requirements_dev.txt b/requirements_dev.txt
index 8facfc50..89769701 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -11,7 +11,7 @@ tox==3.24.1
 coverage==4.1
 Sphinx==1.4.8
 cookiecutter==1.7.3
-PyYAML==4.2b4
+PyYAML==5.4
 pylint==2.3.0
 pytest==6.2.4
 setuptools==57.0.0
diff --git a/setup.py b/setup.py
index 2a9c4a43..a9475fb0 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@
     'iotedgehubdev >= 0.14.3',
     'applicationinsights == 0.11.9',
     'commentjson == 0.9.0',
-    'pyyaml>=4.1,<=4.2b4',
+    'pyyaml>=4.1,<5.5',
     'pypiwin32==219; sys_platform == "win32" and python_version < "3.6"',
     'pypiwin32==223; sys_platform == "win32" and python_version >= "3.6"',
     'more-itertools < 8.1.0'