oslo.middleware>=3.0.0 # Apache-2.0
python-daemon>=2.1.1 # Apache-2.0
pyOpenSSL>=0.14 # Apache-2.0
-PyYAML>=3.10.0 # MIT
+PyYAML==5.4.1 # MIT
requests[security]!=2.9.0,>=2.8.1 # Apache-2.0
six>=1.9.0 # MIT, also required by futurist
stevedore>=1.9.0 # Apache-2.0, also required by oslo.config