# of appearance. Changing the order has an impact on the overall integration
# process, which may cause wedges in the gate later.
PyYAML>=3.10.0 # MIT
-Jinja2>=2.8 # BSD License (3 clause)
+Jinja2!=2.9.0,!=2.9.1,!=2.9.2,!=2.9.3,!=2.9.4,>=2.8 # BSD License (3 clause)
six>=1.9.0 # MIT
-sphinx!=1.3b1,<1.4,>=1.2.1 # BSD
+sphinx!=1.6.1,>=1.5.1 # BSD
oslosphinx>=4.7.0 # Apache-2.0
-reno>=1.8.0 # Apache-2.0
+reno!=2.3.1,>=1.8.0 # Apache-2.0