diff --git a/doc/requirements.txt b/doc/requirements.txt
index 17969e3..691e86b 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -1,4 +1,4 @@
-sphinx>=2.0.0,!=2.1.0 # BSD
+sphinx>=2.0.0 # BSD
 openstackdocstheme>=2.2.0 # Apache-2.0
 reno>=3.1.0 # Apache-2.0
 sphinxcontrib-apidoc>=0.2.0  # BSD
diff --git a/requirements.txt b/requirements.txt
index 19314ad..691bee1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,8 +1,5 @@
-# The order of packages is significant, because pip processes them in the order
-# of appearance. Changing the order has an impact on the overall integration
-# process, which may cause wedges in the gate later.
-cliff!=2.9.0,>=2.8.0 # Apache-2.0
+cliff>=2.8.0 # Apache-2.0
 keystoneauth1>=3.4.0 # Apache-2.0
-pbr!=2.1.0,>=2.0.0 # Apache-2.0
+pbr>=2.0.0 # Apache-2.0
 PyYAML>=3.13 # MIT
 requests>=2.14.2 # Apache-2.0
diff --git a/test-requirements.txt b/test-requirements.txt
index ddc2e55..58608e0 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,10 +1,7 @@
-# The order of packages is significant, because pip processes them in the order
-# of appearance. Changing the order has an impact on the overall integration
-# process, which may cause wedges in the gate later.
 coverage>=5.0 # Apache-2.0
 fixtures>=3.0.0 # Apache-2.0/BSD
 requests-mock>=1.2.0 # Apache-2.0
 oslo.concurrency>=3.25.0 # Apache-2.0
 osc-lib>=2.1.0 # Apache-2.0
 python-openstackclient>=3.12.0 # Apache-2.0
-stestr>=2.0.0 # Apache-2.0
\ No newline at end of file
+stestr>=2.0.0 # Apache-2.0